I finally managed to get to the second flap weldment in the winter after messing up the first one. I ordered one back in around March/April '21 but didn't receive one until September '21. Through a mistake in ordering I actually received (and paid) for two. Good lord. Well, lets get this thing in there.
I carefully opened up the holes in the weldment with the drill and finally with a reamer, with much better results then my first attempt. The holes for the bolts are very snug with no play. Much more acceptable.
In it goes into the cabin area. Looks great.