Thanks mate. Just hope your wrong in my case. Will check in the week. This drone is LOUD though. You can hear it above the radio, is way over to the right and cornering makes no difference. I am looking next at the disks as they are very old and may have a tiny warp that is vibrating at speed.I doubt it is them though as braking makes no difference. I know its not the wheel balance as I have swopped wheels with no change. I will check the gearbox though just elimainate that possibility, or solve it.