<VV> 110 PG with rough idle and wanting to stall at stops

[Stephen Upham]

I just tried the wire down the venturi suggestion.  When placed in  
the left carb it shuts the engine down.  When placed in the right  
carb engine continues to run.  No change in the performance.
I then tried removing the idle screws and sprayed Gumout in the  
holes.  I reinstalled, gently seated them, and then backed out 1 1/2  
turns per the manual.  No change in the performance.
I tried the hand over the carb, rev and release method.  The left  
side immediately dies when covered unless I rev first and then place  
my hand over the carb.  The right carb allowed placement of the hand  
and then reving.  After trying that three times on both sides... no  
change in the performance.
I eyeballed the crossover tube where possible and felt for cracks in  
the rubber connections in the tubes where I couldn't and felt  
nothing.  Remember that it is attached to the carb with hose clamps.

Next...

Stephen