I own a 1948 house. The garage door is a single door, age unknown. Metal
panel door, 4 panels, with a garage door opener that pulls it open from the
top. The door jammed at some time in the past, before I bought the house,
and damaged the top 2 panels. The top of the top panel was pulled inwards,
and there is a 6" gap at the top of the door. I have to shove it against the
frame and put a screw through it to hold it closed. I would like to just
replace the entire thing. Any advice/suggestions on how to do this? Are
replacement garage door kits readily available, easy to install?