Great bass from a linear tracking arm?

For $11,500 the Air Tangent should come with a compressor that doesn't have pressure issues. One shouldn't have to 'tweak' an arm that costs this much.
In this respect the Kuzma Air Line seems to be a better design and to represent a better value.

sirspeedy70680@earthlink.net,
I enjoy reading your posts but you make it difficult to do so by omitting spaces after commas, periods, and other punctuation marks.

Yes I put the bass issue down to the low pressure pump used and I agree it should come with a better pump. However that is an engineering issue not a setup issue as the arm was set up perfectly as supplied. I am gratified to hear that it does make an improvement however. I am interested in the kuzma as it appears to be a high pressure design. Anyone compared them in the same setup? What pump did these guys use? Were there any other mods?

As the Kuzma arm moves across a disc the downforce "slightly" changes.This was reported by JV in TAS.That IS a BIG issue,and should be considered a design flaw.
As to the issue of a better pump for the A.T.I believe many amps/pre-amps are bettered with "better" NOS tubes.It's all part of the "hobby",I guess.I'm not complaining though.
Sorry about my keyboarding.I am a novice at this,so you'll have to bear with me.

Best!

Kuzma's air bearing is specifically designed to work under high pressure but the Air Tangent's isn't. I wonder how well the AT would physically hold up under high pressure over the long haul?

Well as to the A.T. holding up under high pressure,in the long haul,both of my friend's had this exact compressor combo going for about ten years(I don't know how high the pressure was,but I do know it was way more than the stock model).The only reason they sold the arm was that they were getting a bit "long in the tooth",and wanted a really convenient,non maintenance arm,so switched to a unipivot.Both arms had absolutely zero maintenance issues in the "about a decade" of usage.
BTW,one friend had the 11,500 dollar remote vta model,while the other had the bargain priced 8,500 dollar(that's a joke)manual vta arm.
Personally I love the Kuzma arm,and am only relating how much better the Air Tangent actually is,as opposed to the stock(and it's not bad at all) model with pump.
As a little back story,let me mention that both of these guys(fanatical LP collectors,I mean FANATICS)started out going through a lot of really good arms,but felt the linear design offered "real gains".So after living with some pivots(nice arms,but not the maxxed out A.T.)they switched to a modded ET-2 model,and started playing around with the pump/compressor issue.There were about six guys,in my little circle that went this route,so all mods were then done by committee(a great way to have "instant guinea pigs").
Eventually one went for the "amazing" auto setting(sitting in your seat,you can adjust vta,for every record,on a digital read out)11,500 dollar Air Tangent.Then friend #2 went for the Regular "cheapo"(-:) model for 8,500.BTW,both got sizeable discounts,as they knew industry folks.
Eventually,both started collaborating on how to improve on the bass,so the theorizing began.Ultimately friend #1(and get ready for this)started talking about the hobby to his dentist,who just happened to offer to sell him a HUGE used compressor,he no longer needed.Cheaply priced too!So we were off to the races.
This turned out to be a "windfall" upgrade( I have no clue what the model,or specs are).So my close(in distance and friendship)friend went scoping out the dentists in his neighborhood(seriously),to see if any had this unit coming up for sale.
Don't laugh!!!He found a guy in short order(we hobbyists are fanatics,afterall)and got the exact pump dirt cheap!
Here's where I,and a ton of other hobbyists come in,as we had heard ALL previous arms,cartridges,and pumps(a few,btw).The difference was absolutely amazing,and quite honestly this newfound analog accuracy really impacted how I listen to vinyl,as I have a multitude of very desireable LP's,which I obtained after hearing so many of these at my friend's home.Actually he was nice enough to sell me many of his doubles.Cheap(he's a great guy)!
He has almost every well reviewed LP in existance,and could easily buy a condo(seriously)if he sold his collection!His sound system is absolutely fantastic,and mega-fullrange,but not of the "latest must be greatest" variety,as he is not impacted by anything but two great ears.He comes from the update/mod to your taste school!
The compressor was located in the closet,of one of his "three" record rooms.It really was hysterically funny,to see this "motot boat sized" schtick,sandwitched betweeen three pillows,because of the start up noise(not really bad,actually).BUT the darn thing realy worked,yet is now SADLY gone.As is the Air Tangent.He simply felt that it literally hurt his hands to change the dessicant(his description,and I have no idea what that is)as he is getting on in years,and has been fanatical long enough.
So,now,when I read some of these threads,that are "way technical"(yet wonderful,and entertaining in the best way)I have to smile,as I have seen it ALL,so many times before,with this loveable crowd of "nuts",who merely tolerate me.Too much fun for only one lifetime!!
Best!