Hey Rich,

Back to the uniflow for a sec, yes that diagram you referenced is what I was talking about. The other advantage with that set up is you can go back to fuelling/de fuelling through the carb line. But like I said uniflow isn't the answer to your problem, you are on the right track with Quick.

I understand it may be possible to remove one of the backplate screws, drill through into the crank case, and replace the screw with an ordinary nipple if you need crank case pressure.

Those Aussies across the ditch have some PC 9's we've just bought Texan II's. Similar looking but the Texan's are heavier, more powerful, pressurised, and have bang seats installed as I understand it.

Have you flown the model yet? Is the problem theoretical or real at this stage?

Good luck with it

It's Dave by the way, Cheers,

Dave H