I'm pretty disgusted with the cut quality on my Ferris w/b right now. There are a lot of weeds and really tough grass stems on most of my yards, and my mower just isn't doing the trick. The rpm's are right on, the blades are sharp, pitch is right. I want to try a set of high lift blades, but I can't seem to find any. My dealer said they can't get them, my John Deere dealer couldn't cross reference anything to match. The blades are 16 1/4", 5/8" center hole, .240 thickness. Can anyone find me some high lift solid foil blades that match this description?