Okay, I'm going to start off by saying that I'm new to playing bass. So, maybe everything I saw is completely ridiculous and amateur, but I need help. Okay, so. I recently started playing bass. I played guitar before, and picked bass up because I was asked to be in a band and play bass, so I've been learning. I was borrowing a used Squier P Bass, and just picked up my own, a Squier J bass. I noticed that the strings on the J bass, right away, were more flexible and metallic sounding. So, I'm assuming that they are a thinner gauge than the ones on the P bass. But, as I got playing, I noticed that sometimes, while playing the J bass, that the frets didn't give the right tone, at all. The guitar is tuned, and everything, but something just doesn't sound right. I'll include a video of me playing Gigantic by The Pixies on both basses (the P bass being the one that sounds correctly), and you can hear where the J bass sounds different, and wrong. I really need help, guys!