I just picked up a mint DP60L doing the exact same thing... My Antiskate is definitely off, even at 0, it pulls a back force of near 2g... I won't have a chance to check it out for a couple of weeks. If you don't have answers when I do, I will respond... I feel like someone tried to service this and over tightened the bearing. I'm going to loosen the bearing, lube it and appropriately retighten, check out the auto lift, adjust anything I can and try it again.
Good Luck, Tim
Good Luck, Tim