Let's break it down. When I installed my 140 amp alt. during the mockup earlier, the shaft was hanging up when I was spinning it checking for clearance. So I checked and double checked and triple checked, I had clearance in a full 360 degree circle. So I get the alt. out and spin the rotor some more. The alt. fan is not hanging up, yet is slightly warped (it's plastic). Feels like it's coming from the inside somewhere. Should this go away once the alt. is on and running? Should I break it open to see what's going on? Take it back and get another one? Thoughts, ideas, opinions? By the way, I might do a write up to accompany this swap.