Careful Semi Retired.
The RCV .60 has an issue with the material used in the crown wheel and pinion.
Grant Furzer of WRCS in Sydney, lost his RCV.60 powered TU 95 "Bear" at Shepparton because this assembly failed in flight.
This was the 3rd time this had happened to Grant (previous 2 incidents had happened on the run in bench and were repaired under warranty.)
Contact me direct and I will put you in touch the Oz Engineer who is working with RVC on overcoming this problem. He can advise you of the technical details and what to watch for.