Jon I still feel that perhaps, atleast as far as the crank and BB are concerned, you may be over your head. as you no doubt noticed you need special tools to remove your old BB and install the new one. I think you need to seek the advice of a shop or atleast a more experienced home mechanic. where do you live? perhaps a C&Vr close by will lend a hand.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk