Hi- I have always had hard rocks or rock hoppers since they were new 20 years ago and I like them so much I ride them on the street in slicks. Its about time that I learned the inner workings of these things! Just got an old ’92 or ’93 hard rock and am looking to hybridize it. Road rims, slicks, drop handle bars with brake levers and a stem to push the bars out and up. Where should I go to learn? Where are there workshops around the East Bay? Thanks, James