i agree with bear.
youl have a high of 27c in your neck of the woods,if your carbs are clean and your battery is good....you shouldnt need choke.
bear is in the middle of winter

i agree with bear.The choke adjuster is between the carbs, just follow the cable.
Also, check battery condition. These babies need a GOOD cranking amperage to help the ignition pick ups/coils etc. Try starting it cold, with a jump start from a car, if it starts straight away, get a new battery.
Mine always needs FULL choke, but, starts straight away.
Good luck.