I was just (coincidentally) thinking of posting a reverse carb
problem. Mine is that the engine runs fine below say, 60F but often
fails to idle below 1,000 at temps in the 80's and 90's. In fact the
engine has stalled while taxiing during the summer. A short prime and
I'm off and running. FYI, central South Carolina.
Everything
else about our two planes is pretty much the same. C85 with O200 STC
and I assume, a Stromberg carb. Both of our problems must be of a
piece. So, I'm watching this space, anticipating an answer I can use.