Hello everyone! I have a restored SX-1250, got a full, ground up rebuild/recap back in 2014. When I got it back, I was very impressed with the work, but there was some static in that Alps sealed pot. I asked my tech, and he said "it was sealed, so I couldn't do anything with it." I am not complaining about the quality of work otherwise....but it is essentially useless. Even leaving it on for days and working the volume back and forth, it's horribly noisy and drops the left channel a bit. I am desperate. Has anyone had luck cleaning that infernal master pot? Thanks, everyone.