70 GMC front bumper question

[macdaddy70]

Had a fender bender several years ago when a car got to close and pulled drivers side of front bumper out towards front of truck. After multiple attempts to straighten I gave up and bought a repop. Painted it and installed today. No alignment issues with holes, turn signals not blocked, but look at gap on ends...drivers side is much wider than passenger side. WHich is correct (im thinking passenger) and could the drivers bracket be the issue? I have access to a milling machine and can slot the rear mounting hole to try and tuck it in if this is the issue. Just looking for comments. Thanks in advance.