#1
only sometimes when I turn it up. Like it gets stuck and if I tap it the hum stops. What would be the cause of this? It seems like a connection issue.
MARTY FRIEDMAN--"It’s a lot easier to be technical than it is stylized; it really is... But I think it’s a lot more rare to have someone who’s really got their own sound because that’s something you can’t practice."
#2
The grounding wire is probably loose. Take it in, get it fixed, no big deal (or if you're decent a soldering do it yourself)