Very crisp and clean Tim. Question, why is there a double reflection?
Single sheet of standard glass will yield a double reflection (two surfaces). As OldTigger mentioned, mylar or front-surface mirror will yield a single reflection.
If you want a true macro stack the shoot it again but do it as vertical pano and stitch the two or three stacks together. It'll take a while but it should look pretty good in the end.
If you want a true macro stack the shoot it again but do it as vertical pano and stitch the two or three stacks together. It'll take a while but it should look pretty good in the end.