Replaced both hinges. This should be considered a temporary fix only, a new oven will be in order soon as these are 20 years old and poorly designed. It doesn't take much for these mal-designed Kitchenaid hinges to bend. Be careful! Do not "over-open" the door, rest anything on the door nor slam it hard.
Overview: you will be removing the door, which then disassembles into two large pieces (halves- front to back), replacing the hinges, reassembling the two halves of the door and reinstalling onto the oven. 20-30 minute project if all goes well.
The tiny hinge pins are needed to allow removal & installation of the door. Some report using allen wrenches instead, with mixed results. To replace, open door fully, insert one pin in the exposed hole in each hinge. You do not need to buy the $6 "kit"- you can use the pins that come with the new hinges- but if you do, be sure to reinsert them before reattaching the door.
Close door approximately 60%, where it wants to stay open itself. Carefully pull the door straight out. Do not apply too much pressure, as it wouldn't be difficult to break the large piece of glass on the outside.
Have a blanket or rug where you can lay the door face down. Remove two phillips screws on top, the two (with small brackets) on bottom, carefully set aside for reuse for the same places they came out. lift bottom half of door (back) off, carefully place on another blanket or rug to work on it.
Take a pic of what you see- the hinges must go back the same way with the same portion of hinges sticking through the slots- not hard, but it helps to have a pic. Unscrew the two screws holding each hinge, save. Remove the old hinges. The threads on the new hinges for ours weren't quite large enough- had to carefully enlarge using the screws themselves and a power driver. Replace the hinges, get the holes lined up exactly (you are fighting misalignment with this project), tighten the screws.
TIP: clean the inside of the large piece of glass (front of door) before reassembling the two halves, as well as the outside of the small piece of glass on the hinge portion of the door. This is the only way to clean that glass.
Make sure that the two hinge pins are installed in the holes in the exposed portion of the hinges. Line up the hinges in the oven slots, hold the door so that it will move flat against the oven and gently push all the way in. The top will not close perfectly yet. Open the door fully, remove the hinge pins, then close the door- it should seal and stay shut, light should stay off. If doesn't close fully, then check the alignment. Done!
Some models use hinge "receivers"- metal pieces that the hinges rest upon, which also wear out and bend. Replace these if your model has them (check compatibility on the appliancepartspros website- if incompatible, it doesn't use them. They don't cost much.