Steve I called Mr Pastor and he is sold on the one carb setup. He told me that at high RPMS the twin carb set up vibrates and shakes a lot being located out by the heads. He has his plane and engine up for sale. You can buy just the engine or the whole package. I asked if he wanted to do some machining for me, but he wasn't interested. I think he said he built one , or was building one for you.
Have you heard anything about the modification Ultravair is going to announce shortly about an electronic ignition and alternator setup?
Wouldn't know anybody wanting to sell some UltraVair parts would you?