rm100 scratchy pots thin sounding

[the crush 36]

For some reason I'm starting to get a lot of scratchy sounds when turning knobs on my amp its self and my modules. I did replace a pot on my ultra moduel cause of this problem.and it did stop for awhile but now its like cutting in and out I can tap on front for moduel and it will come back on but the amp overall not sounding good I just installed new power amp tunes to what should I do here? Thanks

 

[Mattfig]

Grab some contact cleaner from Radio Shack or any electronics store. Many pots have a little opening in the back for you to spray a very small amount into the pot and then work the pot back and forth a few times...Should clean 'em right up...