I'm not sure why a Gravely rep would say something that ignorant about a product that they are trying to market and sell. It makes no sense to me for him to do that. It is something that most LCO's would be willing "to fool with", but maybe not so much a homeowner? These machines however, are marketed to LCO's way more than they are HO's of any type. I really hope they let you keep it a few more days, and that even though you'll still have those blades to contend with, you can try adjusting the front baffle for a more accurate comparison.