It seems that my Lakland Skyline has developed some problems electronically. I'll occasionally hear some cracks and pops when I play, and when I gently "smack" the bass against my body as I'm playing it pops everytime,... I can form a beat! I'm not hitting the bass with my hand, I'm holding the bass in playing position standing up and smacking it against my body, like it would naturally do if you're dancing/moving while playing. I have tried this with EQ in and out and a fresh 9 volt. I switched to my Ken Smith with same amp & cables and it was fine. What gives? I've got the two Bartolini mK1 jazz pickups with the 3 band EQ, and the preamp board was replace a few months after I bought it because I installed the battery the wrong way on a dark stage (fried the board I beleive because of the reversed polarity).. Any thoughts?