Don't have any tips but do have some experience. I replaced the original door lower WS on my 69 a while back. Really did not want to but the lower portion, mostly at the radius areas, was rotting away. So reluctantly I removed them, both doors, one came away mostly in tact the other in pieces. The good news is I used the 69-70 Daniel Carpenter Door Weatherstripping C9ZZ-6520530 and was actually pleased with the results. FWIW. Brian