I'm assuming your talking about Kentucky Blue Grass when you say KB and if that's what he has he's cutting it at the wrong height by the look of his pictures and that could be one of his problems. I don't agree with the clipping not going totally away because with a double cut they should disappear and he said he triple cut so there is no excuse for clippings being left. I personally feel like the dealership sold the mower and it wasn't properly set up and they sold him a bill of goods blaming the cut on the gator blades and selling him another set of high lifts when he already had high lift blades on the machine.
Yes Ric, I was referring to Kentucky Bluegrass. As you and other stated earlier, height of cut and amount of blade being cut will have an effect. But IMO....you can triple cut KBG (sorry, I left out the "G" in my previous post) and you will still see it. Ask me how I know this? Because my lawn is 75% KBG and as I travel, sometimes I can't mow as often as I want and have to triple cut it. Whether it's my lawn tractor or now gone, XOne, the clippings are still there.
Maybe a good suggestion to mooch is to take it to a different Hustler dealer and have them go thru the deck and make sure the pulley springs are working right? Sounds as if mooch has a handle on deck leveling. The shallower deck that his Hustler has is not known for a good cut on northern grasses. Maybe southern grasses it's OK.