It says right on that pdf that the 29efi is a 10.5 mph machine, and most models are 12mph. You may have thought you paid for a 12 mph machine, but you bought the wrong motor. This doesnt mean its right but if you have an email from a rep saying it will only go 10.5, then how is that scags fault? They have a turf tiger machine that will do 12,you just need the larger motors, so they put that in their brochure to make things look good. Its not a lie, you were just mis-informed and didnt read the fine print. I truly think you're SOL here.