One of the YMMB refuellers told me two weeks ago he was degassing one of the big fuel tanks when this RV6A caught fire trying to restart the engine after refuelling.
This caused a panic, but the fire was quickly extinguished and the RV6A was towed away to the grass parking area.
Also heard a rumour third-hand that a couple of LAMEs saw the RV6A take off that day at YMMB and expected an aborted takeoff due to the engine missing, but that the flight continued.