I have a Cub Cadet 3235 which has the 54 inch 295 deck. I bought a set of the 91-923 Gator Blades and installed them on my deck. I have used them for over 2 seasons. The only problem I had was when I first put them on and went through a really uneven surface such as a ditch, the deck would flex a bit and the blades would make slight contact with each other. After a few mowings, they never hit again. When I took them off I could see some slight scuffing on the ends of the blades. The contact was very minor. A few one thousands of an inch.
Overall I have been pleased with them. I originally bought them to mulch oak leaves. They have done so well chopping up the grass and practically eliminating any wind rowing in heavy grass that I have not taken them off.