MARTY - MY SON thanks you for running a SKAG, He's Quality Manager at the SKAG plant where they are ALL built. He's really not a fan of me mowing with my LZ-54 Cub Cadet TANK but it's been 100% trouble free for SEVEN years, change oil & filter once a year, grease every 3-4 mowing, gas it up and mow.
Also, I interviewed years ago at a company in town, Tempurature Systems Technology Engineered Coatings, they made a mower blade similar to a Gator blade for an OEM, I don't know who that was, but I know it's one WHALE of a good blade, they also make internal rotor parts for Case-IH used on rotary combines, and they also make lots of special cutting tools for the oscillating vibrating cutting tools that have become so popular. This company is a spin-off of the University of Wisconsin in Madison, WI, I interviewed for their stamping buyer, they had a captive stamping supplier 20 miles away, owned by their parent company.
The factory installed blades on my Zero turn were amazing how long they lasted, THREE YEARS mowing my 2.3 acres 39 times before I started seeing cut quality deteriorating and sharpened them. I bought a spare set of OEM blades this spring, the OEM blades run fine 2 years on a sharpening. IH used to advertise they made blades from #5140 grade steel, which they quenched & tempered, and they didn't last ANYTHING like these zero turn blades.
I think it might have been the 44" deck on my #129 I never sharpened very often either, never replaced them either, but the blades on my 38" decks Even the hard coated blades I'd have to sharpen every 2-3 mowing. The 50C deck on the 982 I ran the nearly new blades with only a sharpening or two till I stopped using it, I DID find the new set of blades I bought for it back in 2005 I think. I did make a "Special" set of blades for my 38" decks for use with the vacuum system, I welded 3" lengths of 3/4" angle iron to the back edge of the wings on all 3 blades so they REALLY tossed the clippings and moved WAY more air, they pulled hard too, the 10 hp Kohler barely ran the mower unless the vac unit was hooked up and running.