The convrtible top should be held down to the two middle bows to prevent balooning, or raising up. This raising up is caused mainly by the air flow over the top side. Even with the windows up and idealy sealed the top would still baloon if not held down by the retainer strips on the center bows.
My '64 1/2 vert. Ordered May '64. D code 4 speed, handling package, caspian blue, accent group, Ford blue manual top.
'68 vert. driver. Owned since Apr '78. C code AT, AC, PS, P disc B, PT lime gold, standard black interior and top. NOS RF fender and left quarter.New top and folding glass.