You didn't describe whether/how you set overhang and azimuth (a point that Albert raised above), but if that is not done correctly, you won't get the best performance from the arm/cartridge.
If you need some tools to help with setup (again, I don't know what you have), you might take a look at those available from a small company called Turntable Basics. They sell a very easy-to-use device to set overhang, etc., and a bubble level. Here's the Web site:
http://www.turntablebasics.com/
I also assume you have a tracking force gauge. If not, one of the cheapest and easiest to use is the Shure SFG-2, which you can buy from several audio shops for $20.
If you need some tools to help with setup (again, I don't know what you have), you might take a look at those available from a small company called Turntable Basics. They sell a very easy-to-use device to set overhang, etc., and a bubble level. Here's the Web site:
http://www.turntablebasics.com/
I also assume you have a tracking force gauge. If not, one of the cheapest and easiest to use is the Shure SFG-2, which you can buy from several audio shops for $20.