hi, im having problems starting my rst when its been sat for a few hours. once the engine has cooled down completely, trying to get it going again seems to be a total task.

it will turn and turn and eventually fire, once its fired if i let the revs down it will cut out again untill its ran for a minute or two, once its warmed up, it seems to run ok. a bit lump but the engine has had a rebuilt recently so things aren't properly set up yet. but im sure it should fire over easier than that? i can spend 5 mins or so cranking the engine before i get anything.

i did suspect the cold start valve, and i think i checked it, but i not entirely sure lol.

cheers

Chris