I bought one from Hobby King and benched it. Easiest engine to start fresh out of the box EVER! It was a literal one flip start. Run it hot, lean, and hard for a minute or two, back it down for a few seconds rich, then lean it out again. This is a modern engine that needs to operate at full temperature.
I ran about 8 ounces of fuel through in 2 runs, hand start single flip for both tanks.
I haven't done anything with it since then... I have a Jr Ringmaster that I might stick it on...
Phil