got the T shirt
Have completed retaction checks on F406 (turbo twin) using the engines, not starting but motoring over (ie no fuel ign) worked a treat. Had a B747 outside on jacks in Riyadh with APU running as the man said its a 40 knot limit so it never knew the apu was running(they are alive you know only break down in bad weather or when you are trying to leave early.