Got a thumb 5 about a week ago and it's in really good condition, but noticed when I play it through my GK rig I get a click sort of sound coming from the B string. Doesn't happen all the time but more often or it. I also noticed a lot of background noise (sounds more like wind) wen I turn the mid up on the bass. I tried the bass at band practise last using a mark bass head and an ampeg 8x10 cab. Could the problem be because the GK heads and cabs are brighter than other brands such as mark bass therefore making background noise more noticeable? If it's not this could it be the electronics/pots/or in need of a new battery? I can post a video of the sounds if it helps.