So a few years back I build a cabinet and used Ultimarc digital controllers...they started being sticky and not feeling "fluid" in moving them. Now with my son being a good age to start arcade gaming...I would like to resolve this issue. I just took it fully apart and it "seemed" to help for about 3 or 4 games of Ms.PAc Man...then sticky again. Both of my controllers do this. Cabinet is inside my house with an AC temp of always being 72-73 degrees year round (Florida).