OK, as an OLD guy-(53)- I thought this would be an easy build,-man how things have changed ! I got a few skyhawk frames, the neck will fit a 1 1/8 tube, but all I have are 1" tubes from my donor bikes, ! WTF ? now, I have some 1 1/8 steel that I can weld over the 1" tubes, BUT-I have to find a 1 1/8 die to thread the top end bearings on ! damn ANOTHER TOOL ? well, YES, to do it right,- BUT I think I will just extend the tube collar an inch or three?---ANY THOUGHTS ? 2nd) question,- like I said, FNG,(be gentle!)- the REAR sprocket - what is the general rule ?- more teeth more tork ? less teeth, more speed ? OR versa visa ?