Running Fast And Hot

[LIAW]

well today I thought it was time to fire the bike up as it has stood doing nothing since before christmas when it ran smashingly, it started easily so I left it to run and warm up, a few minutes later and I thought that smells hot but put that down to being in a small shed,

then a few more minutes later I realised the downpipes were starting to glow red which I've never seen before, and I also realised that it was ticking over at just over 2000rpm,

so I guess the cold start system could be faulty then, there is a slide on the throttle bodies that when pressed inward from the clutch side allows the engine revs to drop to normal, when I release finger pressure from the 'slide' it moves outward again and the revs go up to above 2000 again,

as I haven't had this problem before, or any fuel injection problems on any bike before, is this an easy fix ?

(I have to learn all over again)