Before you do any cutting or bending, you should do a dynamic lie test. If you hit the current length solid and the sole contact point is OK, then no need to do anything. If you are confident you need the 36.75, then I would go ahead and cut them to your correct length and re-grip, but before bending them do a dynamic lie test. You want to be absolutely sure you are at the playing length you need, then do the dynamic lie test to be accurate on what you need to do with the lie. Generally speaking, for every 1/2″ change in length the lie will change by 1 degree, but you should always do a dynamic lie test at the correct length before you bend. Some shaft and head combinations droop at different rates and therefore it is not always exactly that ratio.