well i took my ric 4003 to martin sims and im glad i did he done a sweet job on it, filed the nut down adjusted the relief, balanced all the pickups and individual poles done intonation etc all for £40 and more importantly he knows a lot about ric basses double truss rods etc, i went there on sat and he done it for me in just over an hour, his skill and experience on building and setting basses up is 2nd to none in my book, one of the nicest blokes ive ever met and spends time with you chatting we must of been talking for an hour and half after he done my bass he's so enthusiastic about what he does, got a great setup in the factory and the showroom where he builds all types of custom guitars, he's got some pretty mad basses and 6 strings there, seems like theres nothing they cant make for you there. well worth the money.