hey everyone. nikkie here, just thought i'd say hi and look forward to getting to know people here and learning about BS bikes. on the 24th of this month, i'm going to drive 4 hours up and 4 hours back to pick up a veeeeery complete barn find 1967 BS TMX 100. so far i'm trying to find info, manuals and what not specificly for that bike. also.......how do you work the hi-lo quick change?