Thanks for the pics, so he fitted them under the screen if I'm seeing right? I can understand why he pushed the well nuts through, pushing the screen out that few mm put's them out of line. I had it when fitting some 5mm spacers, dunno how anybody fitted bigger spacers but some have, mebbe by elongating the screen holes.
Looks a good job, does it work? What's the mate say?
Did he put spacers under the lower part of the screen to keep it level in that plane.