When I spin my carb to get to the bowl drain plug for jetting changes it stretches the choke able just enough to pop it out of the seat. I too have made part of the ritual re-seating the choke cable and operating it a few times to make sure it is free.
As much as I like the lever up top I'm going to install the knob on the carb and ditch the cable. Got one in from CarbParts and it's going on. I'll miss it for testing, but I don't ride in the desert or spend lots of time in the top end, so I'm converting.
I had to get rid of my hand chock for a plunger type. It nearly cost me a win at my last race. My nephew accidently pushed it in and it stuck when he was putting gas in my bike during a pitstop. I had to get off the bike and jiggle the cable(40 sec).I'm not driving 3hrs to a race only to have it done in by a sticking choke cable and lever.