Steering column collar interference

All,
I have cured some small issues with the 440 install. The one I am tackling next is the header ( Schumacher tri Y) hitting the steering column collar that exits the firewall. I seem to remember someone trimming that collar. I removed the steering column and have it on the bench. there is a bearing at the end with a plastic between the bearing and the collar.
Is it possible to trim 2" off this collar and relocate the bearing ?
Or is there an easier fix to this problem ?
The headers are coated , I would hate to start pounding on them.
Any and all help is appreciated !!!
:thumbsup: