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

All is well, but yes when warmed up and after running out of fuel, it is almost impossible to get it running again. Very
sensitive, the adjustment.

Also, when setting the needle, I close it, and then turn it back let's say 1/4 turn. But sometimes the fully closed point
seems to have moved ? I made a little dot on the adjustment screw, but it is not always on the same position when I close it
fully.  Not sure what's happening here.