just like to share i problem i've had on and off over the last 12 months with my 1989 VN750.
every so often i would be riding, everything going well, then the engine starts running rough and on deceleration and gear change, it would tick over so low and stall.
i read many problems on different sites and found this simple technique has worked for me. Switch fuel off and let engine run to empty, switch fuel on and restart and switch fuel off again and run to empty. Do this about 3-4 times and hopefully the problem is cured - sticking float.
i was so pleased to read this tip and hope that someone else can hopefully benefit too.