Valve Sticking Open

[IvelDesigns]

So after driving my truck for the last two weeks, i noticed the other day that my right rear bag was filling to the PSI of the tank. after some thought, i realized that the fill valve was sticking open. I can get it to close if i hit the open switch a couple times, but it's a problem i'd like to fix.

Does anyone have any solutions that don't involve taking the valve out and replacing it?

I'm not running a water trap, and I do not have exhaust reducers or muffers on my dump valves. I plan to get something on the dump valves to prevent crud from getting into them soon.