Took the bass in for a look at with my local tech guy. . Bought some much tighter strings. They were DR Fats, then changed them for some DR low riders. The former being a round core, the new being a hex core, so a lot more of a stiffer string, so it pulled the action really high. I was always told that you should adjust the action from the bridge only. Tried that, and got buzzing up to and past the 12th fret. I only tried the B and E. Logically I guess I should have adjusted the truss rod. Then thought I need to take it to my tech guy. I guess its two questions. Should I have adjusted the truss rod and is £65 expensive for a full set up.? I rarely need a set up on my basses so haven't had a bass set up for a while. sorry if this is in the wrong forum.