Hi all, I received a Pioneer SX-1010 with a number of issues. The core issue though is that one channel is very low but this is intermittent. 90% of the time, its low! I have Deoxed all switches and controls and even changed out the volume pot with no change. I have also tested as unit as preamp only and the issue persists. Prior to rebuilding each board, has anyone seen this issue with these units? Many thanks in advance.