I bought a used Palatino bass the other day and love the thump and volume, but have one problem. I get a bad string buzz when I pluck the 3rd string noted in the D postion. The action is already way high. I have noticed that if I pluck the string between the bridge and where the fingerboard starts the buzz is not there, but as soon as I pluck over top of the fingerboard the buzz is there. The bass has steel strings. I put a new bridge on it and got the action way up high, but the buzz is persistent in only that one place. Any suggestions?