A buddy and I have one in a Skyraider built from the old Global plans. It's his engine, but over at my house in the plane. I had gotten nothing but good service from the engine. I choke it 3 or 4 times, flip until it squishes, hook up the battery and it usually starts in 1 backwards flip. I think I have a 12-6 on it.

If it has been sitting for a few weeks, the plain crankshaft bearing can get gummy, making it hard to start, or even turn over. You need to choke several times and flip until it pops and flips over freely. Most guys don't want to mess with this and just throw a starter up against it. I pride myself in flip starting most 2-cycle engines (except the OS .91FX) and there are little differences in each engine that must be learned. This one seems to want to be loosened up so the prop bounces back and forth when flipped.

"Mine" also needs to be set quite rich initially for take off. It leans out after 1 turn and 1 maneuver. I think it is probably air flow in the cowl or low pressure in the tank. You just set it for a fast 4-cycle and in 30 seconds or so into the flight it leans out and runs this way the rest of the flight. Set it lean for take off and it overheats. Since I don't fly the plane very ofter, I have taken the attitude of "if it's working, don't mess with it."