Shirley, you can't be serious?
I don't know about originals, but I have seen a few modern builds done that way. No one can tell from the outside.Absolutely! With the button centered in the brass end cap, you can angle the other end of the spring a few degrees as needed. I don't have pictures available right now, but I have done a couple of patchbox covers this way. Can't tell a thing from the exterior, but it simply worked better in those particular situations.