with such a babe sitting on my plane, I would'nt either.

Small update.
I recently tested a few relatively large carbs on my 35cc to examine the gain in power. I found out, that not all Walbro models react the same to needle settings, and one, now obsolete, type I tested required a very rich idle jet mixture to keep the high needle within 4 turns open for best power.
Needless to say, this carb was rejected, for being totally mis-matched to the engine, and probably meant for large displacement engines.
If I look at the posts here, there is a stunning similarity in engine behaviour.