does anyone know what size BB would work as a replacement BB for a late '90s Hardrock. i have heard 68 x 113 mm. i was wondering if maybe a 115 or 118 mm would work or if those lengths would mess up the chain line. i figured it'd be better to ask and get the right thing instead of spending money on the wrong bracket. i'm building up an old Hardrock into a SS and i tried a 68 x 107 mm and it was way too small. it wouldn't allow chainring or crankarm clearance. any thoughts or options would be appreciated..