my rst doesnt like starting when its hot and has been left for a while say 10-15 mins? It cranks for a long time say 5-10 secs with my foot on the floor then fires on 1cylinder then a second one cuts in then 3 until its on four then its ticks over fine? its got a slight hesitation on full throttle on light throttle when its running under power to! maybe related? im at my whits end with this thing now! ive had the timing and emmissions checked and there both fine! its chipped and cammed with a vernier pulley to?