Im working on the wings and installing the flap and aileron gap seals to the rear spar. I am not willing, at least right now, to try and buck the 4-5 rivet due to it basically being behind this stiffeners on the aileron inboard mount bracket stiffener. I am thinking I can just use a cherry max, but what is the exact size of cherrymax I should use? I think the LP 3-4 would work except since it goes through the doubler im worried it wont be acceptable.