Need TT setup Help

Your explanation about the one fourth inch taller platter is almost certainly the problem. Many cartridges change tonal balance and tracking ability in as little as 5 thousands of an inch. There must be a way to bring this back to the original VTA (height).

You didn't mention what tonearm you are using with your table but FYI,Michell sells a VTA adjusting collar mechanism for the Rega arms that allows raising of the arm.OL,Basis and Express Machining also have similar devices.I have no idea which is the best unit to choose from,tho nor if models exist that fit other tonearms.
Best,
Ken

I am using a Linn Basic + arm, and last night I reset the stylus pressure weight. I havent had time to see what effect that has. In terms of raising the arm, I am looking at the table now and the clearance between the arms counterweight and the top of the table cover is less than 1/4 inch so I cant see how I would be able to raise the arm of any significance.

any other thoughts would be apprciated.