Had exactly the same symptoms on my A10.
sometimes it started first or second kick, then it needed 5 or 10 kicks, wet plugs etc.
I suspected the carb, so cleaned it several times, moved the needle up and down, got a new pilot jet etc...
All to no avail.
In the end, as it was the wrong type of carb anyway and I got fed up with it, I forked out for a new one.
Cost me about £170, but boy, did that make a change.
It has now become a first kick starter whether hot or cold.