I'm wondering, with all the fiddling with the carb that everyone's doing, if anyone's tried a different approach, perhaps ignition setup?

When you lift the tail of the airplane, stop the airplane abruptly, or simply close down the throttle too fast, depending on the mass of the prop, you're going to load the engine up (braking), perhaps momentarily just enough to make it quit.

I'm sure that everone's that's observed gas engines for some time have noticed that the inertia of the prop braking sometimes overshoots the low idle rpm if you rapidly shut the throttle down, then qickly regains some rpm to settle out at the final idle speed.

I'm just thinking aloud here, putting forth some ideas that perhaps were'nt considered before. It's possible it's not a fuel problem, carb problem, or mechanical problem at all??

If I experience this problem with the DA's that I have I'm going to try and advance/retard the timing a bit and see if it improves this anomaly. I might even try a different ignition.