Fender Sealing

I still havent gone out to the shed since Monday night. Im going to put the dumdum on and see how it pulls together. Im kinda like mopar tim. I dont want to have a gap that I can see down into. If theres a gap I will go with nothing and try running a bead of non hardening caulking under the bottom to block off water from coming up. I'll update once I get the fender on for a final time.
Thanks Rod