Hey Dave,

I've recently acquired a slightly used 91FZ and have mounted it inverted on my new U-Can-Do. I'm working through some setup issues with a couple of folks familiar with YS at the field - but I have a question for you:

While sitting still (i.e. not running), the engine will slowly leak fuel out of the carb. What gives? As far as I can tell, it only leaks after I have recently run it... it leaks, I wipe it away, it leaks some more, I wipe it away... I can watch is slowly accumulate and start to drip. It ends up making a fair sized mess under the plane. Then, some time after I've run it... it stops leaking.

Is there a gasket that can't take the pressure? Or is this a result of running the engine inverted?

I've only had it to full throttle about 3 times, but MAN does this thing ROCK! I look forward to getting it running reliably and in the air... I can't believe how much more power this thing has than my OS 91.