If I remember correctly there's a motor adjusting screw by the motor. I am on a trip now, otherwise I'd take a look at mine. Bracket doesn't get bent by just sitting around.
There are 2 screws that mount the bracket to the plinth. There are screws that hold the motor in the bracket.
Where the bracket makes contact with the plinth there is a raised bump toward the back of the bracket, and a grommet at the front. I didn't see any other screws that look like they could be for adjustments. We even found an original setup manual online and there is no mention of a motor adjustment, although it would seem logical that there should be one.
I'm going back to my friend's house tonight to work on it more.
Unfortunately, the table wasn't just 'sitting around'. It was packed very poorly, with the platter off and the bracket exposed, with other objects that could have pressed down on the bracket over the years.
UPDATE:
I just found an illustrated instruction manual on VinylEngine (the manual we found the other night was not illustrated) that does show a motor adjustment screw. But neither manual even mentions the screw or need to adjust the tilt of the motor. I don't remember seeing the adjustment screw, but it was late at night when we set it up.
