I have seen others run into this problem before and have seen different answers. 86 or 85 Raleigh Super Course USA with Suntour shifter bosses. I would like to modify the boss to fit the shifters I have. I have four sets of Suntour shifters and all are standard mount (Campy/Shimano??). Two power ratchet one Pro friction and one 6-7speed Pro and none of the bolts are the right thread to go on the boss. What I would like to do is thread the boss with a tap but none of my taps match the standard shifter bolts. What is the thread size 5M X .8 ????
Can you buy the right size at Sears, Lowes, Home Depot, or do I have to go to a speacilty shop.