Sounds to me like it might be a bit rich then. Only needs half choke from cold, and bogs with throttle...

Have you done a compression check? If the compression is low it's a bitch to start from cold. Once warm though, all the bits expand and the comp will rise and make it easier to start.
_________________
MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball