Sorry if you have read this in workshops.

My cat was fine with the exception of the choke not functioning.

I left it a couple of days and I had trouble starting it I opened the choke and the choke seemed to work for a while great I thought,

but ever since it misses in low revs, motorway and excelleration is fine.

If I am riding under 40 it hessitates. any ideas

im betting that the fuel in the bowl evaporated and gummed up in the jets.

remove carb, do a good strip and clean job.