<VV> carb issue

[Paul Abel]

140 / 4, running primaries only. I just balanced the carbs, and it's 
running good. The issue is, when I choke off each carb with my hand. 
Blocking either carb will stall the engine, but when I block off the LH 
carb with my palm, I get gas all over my palm. Doesn't do that on the RH 
carb. I just replaced both stones, still doing it. Is this a flooding 
problem? Stuck float? Suggestions greatly appreciated.
Paul Abel
Rochester, NY
ACORNS / CORSA