I agree on doing the service stuff yourself. The less the dealer sees the equipment - the better. Sure has been that way for my wife's car.
Doing your own service allows you to learn your machine.
My dealer considers the receipt for filters and fluids as proof of service.
But, all that said - Massey Ferguson is building and selling a device to improve a product (in this case it is a filter shield for use on a tractor). Hence, there was an error in the design of the original product (shield was not installed, which lead to damage during use). By making the improved product available (shield unit for installation) - the manufacturer has admitted that an error does exist (and their desire to correct the problem).
At the very least, the new device should be provided without cost to all concerned (tractor owners of affected models). Better, would be to install the product on any tractor still under warranty.