Sibilance -- that last little bit...

Since you did not volunteer it, let's guess. Grado?

Here's a link to another post that mentions the same problem.

http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1101531954&read&keyw&zzwell+tempered

I have a WT classic and don't have the issue. I used a WT protractor for cart alignment, and the a hifi news test record to set up the cartridge for azimuth and anti skate, etc. The test record was very good for the anti skate. Another A-gon member (red) posted a good method for setting up the azimuth due to the dished platter. hook up a tape player or cd burner (anything with a left/right channel sound meter) and use the 300hz track to adjust the azimuth until both channels are equal levels. Its surprising how the cartridge appears to lean right, but both channels on the sound meter have the same output.

Let us know how it works out.

Gibson 58, I have to question this method of setting azimuth. If the cartridge output is not perfectly matched, channel to channel, you will be correcting the wrong thing. Maybe that's why you are leaning to the right. Try just doing it by placing a toothpick on the headshell, or placing a small mirror on the platter itself.
Marty

Focusedfx,

It's possible that alignment, VTF or SRA are contributing to your problem. But if you've adjusted them without reducing end-of-side mistracing then you may simply have reached the performance limits of your equipment. Since the WT is a very well-damped arm and table, suspicion begins to fall on the cartridge.

Some cartridges are worse than others at tracing those challenging inner grooves. No amount of adjusting will overcome that. Inquiring minds want an answer to Marakanetz' very pertinent question. Of course if Viridian's guess was correct, 'nuff said! I could guess some others too.

Seantaylor99's supposition that the LP's may be to blame seems unlikely since you're hearing the problem on multiple LP's. I have LP's that give many cartridges fits, but the LP's aren't faulty - just difficult. My two most recent rigs play them all with great clarity. This clarity only arrived when I changed cartridges.

Try examining the needle, head on, with a magnifier to see if it appears perpendicular to the cartridge base and/or headshell top. If not, I believe you need to adjust azimuth until the needle is perpendicular to the record/platter surface. Adjusting the cartridge base and/or headshell top in this case would not result in the proper azimuth.

I have noticed needles that are not set properly in the cantilever by up to several degrees and this can make a discernable difference in the quality of the sound. The relationship of the needle to the record in azimuth and SRA is everything.