I recently got a Raleigh Twenty folder that I'm in the process of buying parts for. Before I get in too deep, I have a few questions. First, I realize that the bottom bracket shell is wider than normal. Would it be recommended to cut it down to 73 or 68? Is there any way to cut it down without destroying the 26 tpi threading? Reason i ask is if the shell was narrower I could just reuse the cups and easily source a normal sized spindle. I'm not scared in the slightest to do the work, I just dont see any need to make it harder than it has to be.Second, when dealing with bottom bracket drop, instead of changing to the 451mm wheel size(dont want it as most tires are narrower than I would like and the selection is farely low), could one just buy shorter track cranks in the 160mm size? How much would this even affect pedal strike etc. I'm reusing the Aw hub as they seem to be insanely reliable so I only need one chainring. Third and finally, with the headset, i'm a little shaky with using a wedge with the stock fork. I know you can swap out the top half of the headset and just run a quill stem, but is expanding in something thats designed to be compressed be safe? I'm no science buff and maybe I worry too much but I'm just curious. I've already done searching and just cant get definitive answers to my questions.