Are these supposed to spin perfectly when rebuilt? I rebuilt mine with nos rust free shaft, gears and gaskets. The ground side of the idler gear is oriented towards the cover as per the book and payed special attention to all details. Once I got it all together it seems a little bit harder to turn than I expected. So I did it all over again and same thing. It's not rough but just in one spot on every rotation there is a 'high spot' -I don't know does this seem the norm until these break in or..? Thanks in advance, freezerburn