Hey all, after patching a hole I found in my tank, it appears there's another leak somewhere as well. When the tank is around 1/2 full, there is no sign of a leak, but after filling it up for the first time since patching the tank, it appears there's another leak somewhere. What's strange is I see no signs of a leak on the upper half of the tank, but there is a fair amount of fuel on the underside plastic.

It only appears to happen when the vehicle is or has been in motion. I didn't notice a leak while parked and running. Again, the only signs of the leak are on the underside of the tank where the vented plastic is attached to the tank. Any ideas?