+1 to John Hopkins. Sounds like floats to me as well. Also, with you seeing the puddle on the ground of gas, I'd check my oil if I were you. If the needle valves on the floats aren't seating, then that's why you had the puddle. This can be a problem because fuel can travel into the crankcase and contaminate your oil. Check the oil and make sure the level is okay- also check the color, and the smell of the oil. If it smells like gas, get that mess out of there. I wouldn't drive it anymore if I were you until the problems with the carbs were resolved. I traded a 1980 XJ650 Maxim in mint condition to my brother that I fully restored- Long story short, he had been fooling with the carbs one day, got the floats out of adjustment, let fuel leak into his crankcase. He rode it really hard one day after that, and ended up locking the engine up due to overheating with the contaminated oil. Good luck and let us know whats up when you find anything out.
1997 Shadow VT600c VLX
"Never let anyone stand in the way of your freedom. Live to Ride, Ride to Live"
Ride bell by Robert "Guardian" Woods.