Out of the 3 motors I have , one has the acorn/cap nuts holding the head on....I checked just to make sure there weren`t bottoming out,close but not...But just to make sure I added another flat washer....Red lock tighted the studs in the case, chased the stud threads,soaked the washers with WD40 to get a good feel with the torque wrench(allows them to slide better)....I don`t really like the Acorns but just haven`t been to Lowe`s to get me some regular open ended nuts yet....
