I am really old and I think I have luetic brain syndrome, but I think I remember a helicopter I once flew had a 6mm main shaft. You might want to try for a main shaft of the Hirobo Shuttle. At least I THINK it was Hirobo. Heck, try any heli supply place. =============== Nick Trubov CCP Fort Smith, AR [EMAIL PROTECTED] =============== RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]