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[pd110961]

Kicking it when warm with a full throttle scares me! knowing my luck, i'll be launched over the garage!

[simon]

For some reason I seem to get away with opening it completely but woe betide me if I open it just a notch. I made my own choke slide to go into the re sleeved 389 on my 350 and one of the teething troubles was that the choke slide would unseat the throttle slide ever so slightly. When that happened there was no way to kick the bike without it kicking back. Sorted now though.

[Riggers]

There's one more thing you could try pd110961 and that concerns your starting technique. You stated that you ease the engine over compression and then give her one full swing. This means that your engine has to go all the way around again before getting to another firing stroke, by which time it's probably slowed down to an almost standstill - and could the reason for the kick back. Try easing the engine over compression and then moving the kickstart (and hence the engine) a bit further along its travel before applying your full swing (try experimenting with how far). The idea is to try to get the momentum applied from your boot to still be moving the engine when it gets to it's firing stroke. Hope it helps!