Product review (5 stars): Preparing the door for & installing the new gasket is a LOT of work.
Due to the old GE JB500*D4's design, self-cleaning hardware has to be R&Red also, which is a pain, for the entire door has to be dismantled in order to open the clamshell that holds the gasket onto the door, including heavy fasteners that are hidden. The seal is fine, but it has to be carefully "poofed" at the corner holders and adjusted so that when the clamshell is reattached, it doesn't pinch the gasket, and will seal properly.  It took me three loosen-adjust-tighten tries.