Thanks guys, Yeah I was quite pleased with how easy it could fire up and run, no nasty kickback tendencies like the engines of the old days did. That does help make it easier to run the engine. It does develop some impressive power too. The engine vibration doesn't appear to be all that bad either, I have a Enya R1.20 I rebuilt and it almost tore the engine test stand apart at first. But the Evo 58 engine is a lot more smooth running than I expected.