what kind of bike do you have? if you really want to 'upgrade' you BB for a project they really upgrade it and get a Phil Wood.
too bad the shop is closing he should have learned about bikes before opening. unfortunatly too many shop employees can only replace parts these days. the have no diagnstic skills or ability to figure out what will work.
as for you Vintage needs go see Joe at the Bicycle Clinic in So Weymouth. he can be a bit gruff at first but IMHO is the best bike guy on the So Shore.
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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