Warren3200gt wrote: I think the fuel t and carb fuel couplings o ring size is 2 X 8.
O-rings are sized by thickness and ID. 2.0 x 5.5 is the correct size. I buy O-rings in bulk because I restore a lot of carbs for people.
The O-rings on the Tee and fuel transfer tubes get exposed to the outside environment and are the first to get hard and brittle. They typically literally crack and crumble when removing them.
Unganging the carbs is a bit of a pain but necessary when rebuilding a set. The challenge with the CV34's is the choke system. You might want to take photos of the linkages and how that tiny spring fits in the system. I use red loctite on the butterfly screws when replacing them and I also upset the head just like the factory does. I made a small nub by grinding a piece of file, then that gets positioned in the backside of the screw and it gets pinched with high leverage pliers to flare out the end. I've got photos showing the process if anyone is interested.