So I got a new coaster brake rear wheel and a new 56 tooth sprocket. I find I need to open up the center hole by about 0.08" and I doubt I can do that evenly with a file. Has anybody found a reliable tool/method to do this in a garage that doesn't have any serious machine tools? Otherwise I am going to have to search out a machine shop.
If it can't be broken I'll find a way!
I'm not lost, I'm exploring!