Not a problem, I've won a few.
I find if you don't move the JFC it seeps very little. I close the JFC each night and for filling, so mine gets a lot of use. juice will seep from the tank between the base and JFC, creating a ring of liquid on the mod between the AFC and base. Exactly like the Merlin does since they have an identical design.
A quick wipe and it's all good in da hood.