Originally Posted by Papabear86
Plus, I have not a clue how to adjust the mixture with the exception of fiddling with the ring around the pin
That is how you adjust the mixture. Moving the clip down towards the pointed end, raises the needle, and richens the fuel/ air mixture, moving the clip up towards the blunt end, lowers the needle, and leans the fuel/ air mixture. What position is the clip in now? Are you sure you dont have any intake leaks?