RV-7A Fuel Tank

Looks like I have a leak in my right fuel tank on the back. So I took all the screws out and unbolted the tank at the wing root. And nothing happened. In fact the tank didn't even move even a little bit.
My neighbor said I need to beat it at the fuel filler to get it over the screw dimpling. I am very disinclined to do that.
So if anyone can tell me the secret of pulling an RV-7A tank I would really appreciate it.

Tank removal

Did you take the bolts out from inside the inspection panels that attach the tank to the spar via the z-brackets?

If so and everything’s else is disconnected then you can use a putty knife to get the dimples over the countersinks of the spar.

Also if you do not have the plans, you can order them from Vans on a thumb drive, you’ll need them.

Proseal

Could also be some proseal stuck to the spar cap.

Each fuel tank rib will have three bolts holding it to the main spar accessible through the access panels - did you pull all of them or just the three at the wing root?

Didn't know about the spar bolts. That must be it. Thanks all.