hey guys my 50kv gun is not working, i think it might be the ground. is their a way to test it? the powder will come out of the gun good it just will not stick to the parts is their anyway to fix this

?
also i just got this gun 2 months ago and used it when i firs got it to see if it was going to work, now it does not.
i dont know that to do i get the gun and when i get it have to work on it "sticky trigger" and other small stuff, I just like when i pay for something, i like it to work, i am not happy with this system so far, i am not saying its a bad system i just want it to work right, i could have spent lass on a hot coat and have it work, lol