strange startup problems

[l3uddha]

hi all,

recently I installed the jardine exhaust, rejetted, and balanced the carbs.

I've been working on my bike a lot this past week for a trackday on wednesday, & yesterday when I started it up strange things were happening with the choke.

as far as the jetting goes; things seem fine. I've taken it for a few test rides and it feels pretty smooth. doesnt seem overly rich or poppy at all.

When I start the bike with no choke; it starts, and idles at about 1k becasue it's not warmed up.

when I start it with full choke, the revs hold at about 4k for a few moments; then slowly fall below 1k and it dies.

the choke cable itself seems fine and doesnt appear to be sticking or anything.


if I start it with no choke, and then give it choke; it revs up for a few moments and then dies again.

about 3/4 choke and it will hold the revs. full choke and it struggles and dies.


again, while riding everything seems fine and the bike appears to be running alright.



suggestions?

[scratch]

I've had bikes like this before, just use 3/4 choke.