I have a Nikon flash. The back control plate (glued on) fell off allowing all the internal slides to drop out. I spent a while figuring out how to get them all back in the right place and order. Now I have Scotch tape holding the back on.
I would use Lexel but after opening any size tube the self life is very poor. Lexel is terrific.
I hope to find a similar product in a small tube to use. Please do not suggest cyanoacrylates. I do not like them. They have never worked well for me.
Any other single tube adhesives any good? Last resort is epoxy, but I really want to avoid epoxy.