That bicycle handlebar grip style tiller handle was used on several outboards and reproduced by a couple members. It should not be hard to find. The one used on the magneto handle may be the close to the one used on the Elto Cub. The one on the tiller close to the one used on the Elto Handitwin. Some have been satisfied by fashioning a grip out of Epoxy Putty and coating it with Tool Handle Dip.
