I also moved my firewall back 1 1/2 " reinstalled it, fiberglassed and pinned it. Shouldn't come loose now. Am going to reinforce the fuselage on sides as suggested, No opinion about removing foam. Don't think it will make much difference???????
If I were going to replace the turtle deck I would go ahead and bash it into something with the cockpit much further back. Gives it a real sleek look. Landing gear mount definitely needs a little beef but we gotta remember that everything done to strengthen the airframe adds weight and that's what we're trying to get around. Just make good landings.