I have a fender deluxe precision special with an active EQ the pot that controls the mid frequencies has become super scratchy and poppy when i turn it. The problem is, this is the second time this has happened. I paid to get it fixed the first time and the second time i just busted out the soldering iron and wired it in myself. I'm pretty sure it just used a 250k pot, but whats to stop it from happening again? Do i just have bad luck with cheap parts?