Because of inevitable wear and tear on patterns and variations in body components, especially wood-framed doors such as on '33-36 open cars, I learned a long time ago to order the panel cardboard pieces first, fit them to the doors and quarter panels, and then send them back for either replacement with an oversized panel or trimming and then the addition of the padding and upholstery material. That practice saves a lot of time and avoids disappointments. To expect a perfect fit from a kit when no two bodies are absolutely identical in all respects is unrealistic.
Ford recognized this when it built the cars by specifying that certain upholstery and top fasteners not be installed in accordance with the dimensions on the engineering drawings, but rather were to be installed in the assembly plants to fit the actual hole placement in the individual bodies.