Well Geee I have been hanging all my trucks in the direction of the front of the engine for a lot of years to keep what little fuel left in the engine away from the OWB. Wow I guess I'm just lucky that this has worked and not eaten every bearing I have stored for the 10 plus gallons of fuel I burn every year showing different models and the 4 gallons plus every year of 30% I use every year. Or could it be from shutting off the engine properly so the there is very little fuel left in the engine. But I'll have to think about changing everything that works before I set my RC's flat. Hope you don't mind