[Advanced Design]

Possm, I would make the roll pan fit the grill. Guessing it was two pieces joined at the center. Since it sticks forward there, can you split it again and take off enough material in the center so when you join them back together the center moves rearward? That should bring the edges of the roll pan and grill into alignment. Sneak up on the trimming so you don't remove too much and end up with the center too far rearward.

Hope that makes sense.