Thank you!
Second Air Force sent me a PM very useful:
"You mentioned the cockpit parts fit. When I built mine I removed the sides of the floorboards so that you can see down to the wing area as on the original. Perhaps that will help with any fit issues you might be having. As I remember the floor interferes with the sidewall detail."
Scott, you're true! So, I've modified the floorboards... Thank you, mate!