The 7510 and 2410 tractors are very similar and I think I know what is going on, having had some issues with our
B2410.
Guesses of mine are:
1) It has "larger" tires rather then smaller ones
2) You are speaking about the rear wheels of the MMM hitting the front edge of the rear tractor tires
3) You purchased the unit used, or new and the dealer didn't walk you thru everything.
Our MMM links were NO WHERE NEAR to being correctly adjusted by the dealer. I had to read and re-read the tractor and MMM operator's guides twice to fully grasp all of the problem they caused by not following the set-up procedures for our tractor/MMM combo.
Essentially, I think the mower is too far back on the tractor, and that distance is controlled by the front attachment bracket and adjustment of the arms for the FRONT mount. I forget the dimension, but Kubota lists a specific length of the front link rods and we had to adjust ours a LOT.
Once that was done, we moved to the rear lift links and both of them were incorrectly adjusted as well. There is a specified suggested length for the rear links but you will need to adjust for a level deck as well.
Find a nice large piece of cardboard, the operator manuals for both the tractor and mower, a good selection of tools and you should be able t ofix this with relatively easy adjustements in under two hours.