The inside plate wasn't fitting as I would like, so I marked and trimmed a bit to get it to fit nice and square.
I did it this way, rather than squeese the plates together with clamps and welding.
Because of this, I had to fill a gap in the frame. My mearsurement from the front of the notch to the back was consistant all the way thru.
Once capped, you wouldn't be able to notice, but I don't gop out like that
-
-
-
-