Well the G has been away for 2 months being tuned and to rid it of the engine hunting. The hunting was caused by the 4 venturi's being loose. The 40 DCOE venturi's are held in place by a small clip and with 50 years of use they wear out. The air cleaner base did not hold them in place either so they were able to move back and forward as they pleased.
The 45 DCOE venturi's are held in place with a grub screw and lock nut so they don't suffer the same problems. Anyway the G is now running 99% better then before so that is a big plus.
A bit disappointed the Carburetor service did not pick this up when being rebuilt.