I got me one these bad boys, despite it being Fisher Price quality it actually plays OK (up to 12th fret anyhow lol) and serves a unique purpose, I'm gigging with it but is has a couple of reliability issues that I'd like to solve ASAP: 1) Biggest problem is the neck pickup height adjustment screws slip, meaning I'll be playing and then PLINK the high E string is touching the pickup and I have to get a screwdriver in the middle of my set to lower the pickup again. 2) The knobs fall off. 3) Are there some fairly affordable aftermarket lipstick pups that I should consider? Not trying to put $400 in pups into a $350 guitar. All advice welcome.