ok, well, you were saying you only had about 400 miles since the rebuild, that does not constitute a break in period for any engine bigger than about 125cc.
The low compression issue is resolved normally by the boost as the turbo spools up. Too high compression, and you have a grenade.
I am not sure on the 2.2 if the injectors are anywhere near an oil jacket / gallery. If they are, that could be a weak point. It could also be that the injectors are leaking slightly, dumping gas into the engine when it is not running, and washing the cylinder walls. Thus creating the gas in oil problem.
I do know people that have had trouble with injector o-rings from time to time, and they can be the most simple culprit in a case like that.
So, go back to petroleum oils for a while yet, and check out anything on the fuel delivery side.