1. Now that the latch striker plates are bonded successfully, I tested out the new door. It works great!
2. I decided to make the oil door look nice on the cowl by straightening and filling the seams. I scuffed the cowl, applied two layers of electrical tape and packing tape to the oil door, then attached and closed it. Then I made up a very thick mixture of resin and micro (to the consistency of spackle, so it wouldn't sag or run), then applied this mixture around the edges of the door. I pressed it into the seams as much as I could, then waited about 10 minutes and removed the door. When this stuff cures, I'll sand it and see how things look.