About that Alternator/shroud thing: I don’t know if it was specific to my Concept1 Cooled fan shroud and welded/balanced fan, but when I put mine all together, the fan was rubbing on the shroud a bit. I had to loosen it all up and tighten one screw a little bit at a time, interspersed with some judicious “tapping” in between. Finally got it all tightened down without any rubbing.