Today I JB Welded the left coin return onto the back door. I scratch-built these coin returns quite a while ago, using scrap pieces from the skins.
I sanded the back side of the coin returns, and then cleaned them up with acetone.
Without much room to sand, I scraped the landing area of the inner skin with a razor blade, and afterward carefully cleaned it up.
I applied JB Weld to the back of the part, where it meets the inner skin. As with the back door panels I recently put in place, I used a toothpick to apply the JB Weld.
I clipped the part in place so that it is properly centered on the front side of the skin, and I'll let it set for 24 hours.