The only problem is those d-a-m-n blue restrictor collars.

BTW: Pulling the pin out alone is not sufficient to eliminate their effect. They still restrict closing the needle valve even with the pin removed, because the needle valve moves "in" as you turn it, and the restrictor prevents that.

jsngnn22: be aware that as the engine warms up the HS and LS needles tends to "walk" or turn by themselves.

We've resorted to putting a grommet, fuel tubing or a small segment of exhaust tubing around the needle to push the clip against the detents and hold your settings firmly in place.