Continuing. Heard a noise in the primary drive found it is possibly the spacing in the teeth. All my primary drives have this though and KTM specifies that these primary drives were made specially in pairs and cannot be replaced individually. So have to live with it. Ordered rear brakes when I get them I can finish up with the rear wheel.
1982, maico, 490, honda, cr500, cr, crf, yz, yzf, rm, rmz, kx, kxf, elsinore, yamaha, kawasaki, husqvarna, ktm, penton, motorcross, single, track, 495, Rebuild, bearings, 1984