Before summertime I'm planning to overhaul my r80gs gearbox. Since spare parts for airheads are scarce in Turkey I'll order them from UK etc. Therefore I need to know what should be ordered for a complete overhaul before doing the job. Bearings and seals can be sourced locally and I have the paper gaskets. But I don't know how many sets of shims should I order in various sizes. I guess they are cheap items and could be ordered beforehand. Also retain spring and neutral sensor are in my list. Do I need any other items? Thanks a lot.