Anyone running a UFO on a ET250!

[Old Iron]

I'm trying to sort out my 1980 ET250. I have installed a UFO from thunder products and its been giving me fits with a bog while blipping the throttle. I'm running a 34 mikuni with a 17.5 pilot jet and 200 main and a comet 102C. I've tried a 15 pilot with the same problem. Anyways, just looking for some advice if anyone has run this motor with a UFO.

Thanks

 

[Old Iron]

I ended up soldering the pilot jet shut and it idles and runs great!