Got the VM22 swapped over today. I used a 22.5 pilot and a 110 main. I set the mixture screw at just over 1.5 turns out; about 1.5 turns and then the width of the slot on the screw. I used a UNI filter and I oiled the inner filter and left the outer dry.
I was able to use the throttle cable I had and just adjust it with the barrel adjuster and the one up at the grip.
This was a bone dry carb, never had gas in it before. I kicked it over twice with the key off and then about 5 or 6 times with the key on, choke on. It fired up and held an idle on its own, even after I lowered the choke lever.
The bike runs every bit as good as it did with the VM26 and has MUCH better throttle response and control, especially in the mid range and coming off a rolling stop. After it was fully warmed up, I was able to lower the idle a good bit. I don't have a tach on the bike but now it just "sounds" right. It was idled way too high with the other carb, just to keep it running.
I'm really happy with the swap so far. I have no doubt that I have all of the performance I had before and mileage should be substantially better.
I would like to try adjusting the mixture screw for best idle, but it's pretty much impossible to get to without removing the carb from the manifold.
The only other thing I would like to do is fab up a bracket to lower the petcock. I'm using one of those aftermarket petcocks mounted to the frame and the fuel actually has to go UP a little bit to get to it. When I go on reserve there's still a good bit of fuel left in the tank and I've actually ran out of gas with a little bit still in the bottom. Should be easy enough to fab up a drop bracket to get the fuel outlets on the tank inline with the inlets on the petcock.