[Shepard]

The new 24mm carb sold by Vegas Carts has a fixed air/fuel mixture screw. It is been epoxied into position then the screw head is broken off. This has caused operational issues for some of the people who have used it on there 460's and on the new 625cc engine.
The remains of the screw are very hard to remove. If you don't have precision tools - please don't try it by hand. I did some work for a friend who had tried to remove his. I was able to use an 1/8" end mill and get the remains cleared out. I located my drill off of the inner idle port. It had been opened to about 1/16" on an inch. I drilled and taped it for 10/32 machine thread. I located a source of a variety of needles and adjusters. This is an experimental repair with no guarantee of working. I'll let the owner continue this if wanting too. Here are some pictures of the work done.