Adjustable ductwork elbow made Sweep thin, works

Sorry, I could not figure out how to upload a second file to the other discussion. Here is the one I made last, week, and many others like it, it unfolds perfectly.

EDITED BY MODERATOR: Moved to the Sheet Metal sub-space. Please use the appropriate sub-space when one exists. Also, if you are going to post a follow up, do it as a reply and use the advanced editor option to attach files. Or, just edit the original post and you can attach there.

SolidworksSheet Metal