Glad you finally got it separated!
I wouldn't complain too much about the fiber glass quality. It seems to me that it was better in the Elan and S2 than the TC, but people who have more direct experience with them may disagree, but the glass on my TC that didn't show was of varying quality. Part of the floor in front of the front trunk was thin, it wasn't well finished in the engine compartment, and, of course, the boot, bonnet, and doors don't fit all that well.
Keep in mind that you're dealing with a Lotus.