Hi Dave, and a warm welcome to the forum. It's always nice to welcome another Scott Bonnar owner as we all like to learn new things and tinker here. wink

Grumpy has given you excellent advice regarding the drive -roller gear...the last one available from the company that was supplying, was sold to one of our forum members last week. When the nylon gear strips or fractures it renders the drive useless. cry
Most, if not all, spares are still available for the ubiquitous Model 45. wink

Once again, :welcome: to OutdoorKing.
cheers

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin