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Hi Doug, my 12" GSO is reasonable with the more than adequate needle roller plate in the base. Adjustment of the pressure screw is vital though, and there is a very fine balance between too tight/too loose. I'm going to adopt a large pair of washers and a heavy grease between them to try to negate the initial "bump" as you begin the Az movement, and also think a handle fitted to the bottom of the tube will improve things. Balancing of the newer models is easy and precise, and Alt tension adjustment is a breeze with the new bearing system. (Only short term as I'm building an ob at the moment and am going to a GEM mount) Hope this helps.
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