yeah i had a similar situation with my bike after the restoration, overflowing from carbs not running but sounding like it wanted to. ended up being fuel tappet off.
then check the tank to ensure no debris is in it, inline fuel filter, the little filter in the hose from pump to carbs.
carbs could also be overflowing because of float being off or the valve in the bowl is perished so too much fuel is getting in. a fuel issue isnt the end of the world luckily just go over the hoses and carbs to ensure its all clean and in spec, the pump should click around 8 times if not driven in a few days so it builds up pressure.
if its constantly ticking its not getting enough pressure to stop the valve which is why its constantly dumping fuel into your carbs and overflowing them. so ensure all the hoses are also on correctly and tightened