well, right after break in, it would run the 13-6 at 11300 rich, with good compression no matter how long it had run, now it will PEAK at 10800. Now the compression is so bad that you can take one finger and rotate the prop through 360 degrees without even having to hold on to the plane to keep it from turning when it hits the compression part of the stroke.

In fact, when you try to hand start it, a lot of times you won't even be able to flip it through a complete revolution, it stos at TDC with giving that saistying "bounce" off the compression.

I have downloaded the paperwork to send it to hobby services, probably send it out this weekend.