I play a Carvin LP75P with the Stock J99 Pickup and the HB2 Humbucker. My problem is that when i play through my Fender Bassman 150 the lowest notes on the B string doesnt sound very clean at all. From the B up to about D it just sounds muddy. Is there a chance this is an issue with the amp or was this custom bass a waste of money to get the 5th string? I was told that Carvins were a pretty good bass company, and i have no other complaints about it. BUt i dont want to be playing a 5 string if i cant even use all 5 strings.