[SOLVED] SSX sync issues once again

I had a really bad problem in May with the sync turning on by itself and somehow locking the right deck sensor button.  This was causing the track on the right deck to stick in reverse.  Turning the unit off corrected the problem but moments later sync would turn on again and lock the right deck in reverse once again.  Turning sync off would not unlock that button.  The problem had not returned until last night.  Near the end of the night a friend was using my unit and it reappeared.  All software and firmware are up to date.  Is this a hardware issue?