I imagine that pushing on 2" might well be enough to cause some vibration. I've heard of problems with 2" lift in the past. Can't help with angles I'm afraid. 9.85 deg doesn't sound too bad. What would it be normally? I can't remember the length of the rear prop off the top of my head to work it out. I would guess if it's significantly greater than it should be then you'll get problems.
Another thought is are the Yokes aligned correctly. They should be 90 deg out of phase IIRC. If you've had the splines apart, you might well have put them together in phase?
Andy