Hey Wayne!
Yes, I think if the hole were centered under the nipple, and the insert was seated, or pushed in all the way to the shoulder of the insert, the engine would run properly. My friend just wants to buy a new carb body, but curiosity has the best of me. I want to put my spray bar in his carb and see what the alignment is like. If it is good, then I will run the engine. The midrange problem is evident enough on the ground, that I probably won't need to fly it to know if there is a difference; although, I would like another crack at those ski's! For some reason, the ground doesn't scare me when there is snow on it

. I'll let you know what I find.
Andy