Mount a clock on the cartridge and put the stylus on the spindle itself. If you can detect any knocking or excessive movement when pulling a long tool sideways, it may be that the bearings are worn. Also check that there is no whining noise when the spindle is running fast.
Re-building them is reasonably simple or you could get Technova to replace them for you. they are 112 miles from you in Coventry. 02476 366503
Re-building them is reasonably simple or you could get Technova to replace them for you. they are 112 miles from you in Coventry. 02476 366503