Does anyone cut off excess flanges?

[sourdo]

I have a 2021 Ram 2500 6.7 L Cummins with the 6.4 foot bed.

And recently I purchased a 2008 Forrest River Sierra 25RL 5th wheel.

Now I can tow it without issue as it is, but the nose is high due to the case of the higher side rails and high beds heights.

The axles are flipped, I have 16 inch tires, I can add risers, but the easiest thing to do is to raise the B&W hitch and/or raise the pin box in the mounts to lower the front.

And there is my issue, 3-4 inches of flange material that hangs below the pin box, with very close to the rails clearance.

Lippert will not say this is ok, but I get that.

But my question is this; "Is cutting off that excess material something done?"

My years of welding and fabricating tells me it's Ok, but I would like to hear more from others for this issue first.

I think notching the rear corners off with a cut off wheel would be Ok.

thanks for your input.