Please Help T3F problems

@lewm , You are correct, the tonearm was the T3F. The turntable we had it on was not the Reference. It was the Studio which I thought was a fabulous turntable in comparison to the Linn LP12. If working correctly the OP is best served by changing arms as he will have a hard time finding a better table. The arm however is a nightmare in progress and Goldmund no longer services it or stocks parts for it.

The Reference is a totally different table. I have never been in the same room as one. 

I wonder if Frank Kuzma was copying the Goldmund Studio when he designed the Stabi M. Remarkably similar tables. 

It's been a long time since I thought about the T3F. Back in 1980 or so it was the turntable to buy at Sound Components in Miami where I worked. The turntable is ace except for one problem, the tonearm. We had a lot of trouble with them doing odd things like the OP mentions but it's major downfall from a sonic point of view was or is that the tonearm's chassis rings. If you take the table into an adjoining room it sounds much better. It is a beautiful turntable. Removing the arm is going to leave scars and holes on the surface. What I would do is make a thin tonearm board out of a rosewood and cover that side of the table with it than drill the hole for the new arm. A Schroder CB would be perfect and it only requires a 1"hole. The cord comes out underneath so it will not interfere with the dust cover. The look of the arm matches the table.