Nick, I'm impressed that you actually fly that airplane, lol.
In Aerosoft's defense, they advertised for a long time before release that the airplane was not for the casual flyer. . . . .of course I bought it anyway, lol. . . .flew it maybe half a dozen times. . .longest I was able to go without blowing the engine was maybe 10 minutes. Needless to say I don't have it installed anymore. . .beautiful airplane though.
For me the trick is as long as you keep the revs low you can fly all day. I had lots of troubles keeping her in the sky when I first got her but now a flight lasting longer than 15 minutes makes all the struggle worthwhile.