All, I found the problem and the sled now idles without stalling. Here's how! Inside the VM34 Mikuni carbs is the pilot jet (supplies gas at idle), needle/ needle jet (supplies gas at midrange), and main jets (full throttle). The pilot jet is easily unscrewed with a flathead screwdriver. It has an opening as small as a needle with 6 additional openings on its body. Remove the float bowl and inside one of the crevices is the brass pilot jet. I simply used a needle to poke all the holes and used compressed air to blow all the junk out. After this you may as well clean your main jets as well. Unscrew the top of the carb to pull out the slide and blow out the needle jet as well. Finally, I used a small punch to remove the pin that holds some other small jet?? Be careful removing the retainer ring, and pull out the spring loaded mechanism to reveal another orifice.
Reassemble and set the air mixture as per spec, in my case it was 1.5 turns back from seated. I also used a marker on the idle screws which I backed out 2 full truns from seated. The sled fired immediately, and idled at 1600rpm with no further problems. Hope this helps. Pete