Hello all. I received my kit yesterday but have realized a problem. My bottom dropout fits the 68 - 73 requirement but my diameter is quite a bit larger than normal, (Low- end donor bike). Fortunately, I'm a Tool Maker and I have access to machine tools. Has anyone ever bushed the diameter of the bottom bracket? Also, wondering, what is the normal clearance between the Befang shaft (part that goes thru the frame) and a typical bottom dropout inside diameter? Or can anyone tell me what the typical bottom dropout inside diameter is? I appreciate your help!