A new guy question - My 62 came with a quick disconnect rear drive shaft - REMCO Drive Shaft Coupling- installed making it easy to disconnect the drive shaft for towing. (Apparently my cruiser spent a lot of its life behind a motorhome.) Today I decided to install the stock drive shaft and have a vibration over 50mph. The balance weight is intact and everything else looks good. From other posts I found it appears I should rotate the shaft to eliminate the vibration. Is that right in your experiences or is there another way to determine its correct position? Thanks.