It's not about it "looking" straight, it's about it actually BEING straight, so do some work and tear them down to make sure. MIP makes some sweet o-rings for AE shocks, pop open yours, pull out the shaft, and roll them on the edge of a table or something to feel if they're true or not. When you rebuild, make sure you assemble everything "wet", by coating the o-rings and all other seals with a bit of either shock oil or green slime as you put it all back together.

I have never had any AE shocks that leak, well, except for the crappy stockers on my 18MT, but the FT alum. ones I replaced them with sure don't.