I've heard a lot of people complain about this, I can't say that I've had this problem. I did make sure to set this thing up level from side to side. I have standard size rubbers (I've heard some people put OS to prevent drains ).
I never really feel that many drains are undeserved.. at least not more than any other machine. But, you'll find yourself nudging quite a bit.
I think the biggest knock on the game is it's pretty right-flipper heavy. This is true, a lot of the most important shots are accomplished from the right flipper. DT's can be backhanded from the left, but it's difficult, and there isn't much to shoot for on the right side of the PF because of the Pop's.
One of my favorite parts of this game is the mini pf. Trying to get the ball into the shooter lane for another chance at a 2x, 3x, 4x, etc skill shot is very fun/rewarding.