Hi Brian,
I have an L25 ohv,
I am in the process of rebuilding a lot of the mechanical parts of it
I have not found any source of things like wheel bearings or steering head bearings
Presently I am having some steering head bearings made, I will also have to get a rear axle and bearing cups made, unless I can think up of a way to fit modern ball bearings to the wheels as I have done on a few other vintage bikes
John