Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Have stripped the engine to check the needle bearings and apart from two score marks on the outside of each one they seem fine, they look like pinch points when the crankcase is tightened up.Put the engine back together with new flywheel grub screws,the flywheels have a slight wobble after finally pulling them off and first firing there loose again, will have to try some hardened ones as Ade suggested.Still no idea why the engine stops any help would be welcome.Thanks Trevor.