Start up after rebuild

[cangy]

Any tips for getting an 03 EC300 started after a rebuild.It did run for a few seconds on the 4th or 5th kick,after i switched the choke and fuel off and wound the throtle to the stop.Don't think there's much wrong,got good sprark and plug is full of fuel when i take it out after a good kicking.I've been kicking/changing plugs all afternoon.

I have fitted a s/hand carb from a dealer,that i have cleaned and set float hight,it's fine as far as i can tell.

I put a small amount of pre-mix with a bit of fuel in the plug hole while the bike was sitting around waiting for other jobs to be done,i think that is what's coming from the p/v breather now.

Any thoughts?