My new Hamer Cruise bass sounds lousy. I've tried several sets of strings and that ain't the problem. The sound is sort of rough and distorted a little. My MIM Jazz sounds great through the same cable and amp so I'm sure the problem is with the Hamer. The strings look snug in the nut and if I press down above the the nut nothing changes, so I don't think it's the nut. The bridge looks good too. I'm thinking the problem could be in the pickups. Turning one pup down doesn't help. All combinations of pup and tone sound lousy. Could replacement pups be the answer?