No problem with pic you posted but you should note that in most cases of rounded dogs the gear with the holes needs replacing as well as the edges get sloped.
Gearbox problems were and are one of the most difficult to sort out.
We had an XS 1100 jumping 3rd gear under warantee with no visible signs of wear anywhere, yamaha said change everything, shafts, gears, shims selectors and drum. It took 6 months just to get the parts!
