Oi Steve I wrote down all the settings I had it tuned to.
The fuel mixture screw I believe should be at 5 turns out and the idle at six.
The idle is too far out from memory as I didnt have too much time to correct it yesterday.
Just wind it right in and then slowly wind it out till your satisfied with the revs. Then give it a rev and let it return back to idle. MAKE SURE THE ENGINE IS WARM BEFORE TUNING!!
But yes , my fault. Ill grab the settings for you. I had it preety dialed. Buy the mix screw and idle are easy as to play with.
Turn the mix screw in to richen up or turn it out to lean it off.
If all fails send the carb to me and ill sort it out!
Its a super basic carb , nothing too it so you shouldnt have too many issues
Sorry about this mate