RE: surging in flight
yeah, I did it on mine just for good measure, much easier to do when the engine is on the bench instead of in the plane... mine was a little different as I was using the carb off a G230 car engine that has a primer bulb (VERY handy on a non cowled plane) which makes it more interesting because the atmospheric reference is under the primer plate, a little carving with an exacto knife and I got a brass tube in there and a line running behind the engine into the fuse.