Heres what I did, gently knocking in
to round tube, tapping the sides with a flat body hammer to flatten as you go. Takes about two minutes to square a tube up to flange hole.

6965678-P1010015.jpg (291 downloads)

Ronny
6.789 @ 198.63 **.956 Brand New 60'***
4.17@ 169 1/8th mile
John 14:6

https://www.youtube.com/watch?v=TUku_hjYRh8