I'm glad to see that there is a lot of positive response to Josh's posts about the engine.
The engine is pretty straightforward to setup, with the new piston and liner system it's less prone to wear if not properly setup.
The needles threads are smaller than in regular engines so you have to screw or unscrew them a little more to change the settings (which helps a lot) also there are markings on the carburator, so you pretty just close or open the needles one mark when you need to make adjustments.