Erik, Terry Weedy produces a folding burman ks lever, Uk based so delivery costs/time reduced, Royal Enfield from the electra bullets can be persuaded to fit if the ks shaft is in good order but is not a perfect fit, no doubt others will come forward with alternatives. Old factory photos show the ks shaft around vertical which l have found hinders my heel so l have moved to the 10 o'clock position to give more space when pivoting my foot for gear changes, might help? Just my experience which l hope helps.