cheap butt for cynergy 5/16 18 20mm


New member
friend is looking for a cheap butt for cynergy 20mm diameter shaft. He used it on old viking butt, narrowing the pin of viking QR on the butt to fit the shaft. Was ok for several years but recently it started dangle a bit. Anything he tried at the local shops looks like has 0.845 (~21.3mm) diameter. Thank you for any suggestions (other than diameter mismatch doesn't affect playability :) )
Thank you!