Poteniometer For Russian Muff® - Work-alike

CTS 270 series. As purchased, the shaft is too long and full-round. But if you have a Dremel tool with a cutoff wheel (USE WITH CAUTION!), cut down the shaft to 1/4" long, grind to make the "D" shape and ream out slightly the hole for the bushing. One of my customers did this repair, and it works. See the detail pic.

Big Muff/Muff are registered trademarks of New Sensor Corp and Electro-Harmonix, there is no affiliation with or endorsement by NSC/EHX for these items.