Apal L Construction instructions

Hello together, I’m new here and hope someone can help me. I have an Apal L buggy and would have to go to the tank installed in the front, because I suspect that the seal of the tanker is leaking. The car smells of gasoline, but it doesn’t come out of the overflow. Unfortunately, the hood under which the tank sits is firmly installed. The edges to the fenders to and from the fornt window, are apparently glued with Sikaflex. Whether this hood is underclamped in the area of the windshield I don’t want to have to dismantle the windshield. If someone knows how best to get this hood off, I would be very grateful for the help. Thank you in advance! Greetings Thomas