My 30 year old Lucknow has 1/2" thick blades that still look like new after years of abuse ingesting newspaper sausages, buried branches and hidden rocks.
Hard to beat a Lucknow (Helm welding). They aren't cheap but built like a tank. Mine as well has gobbled up all sorts of stuff hidden in the snow including a few broken bricks but never any sausage...lol
There is no visible wear on the expeller fan blades or on the bottom of the expeller chamber other than it's missing the paint which gets rusty until the first use, then it's shiny. The bottom of the expeller chamber seem to wear out first. Never replaced anything on it either, check the gearbox every fall to make sure it's full of 90 weight, oil the auger drive chain with gear oil, grease the outboard auger pillow blocks and idlers and PTO shaft and call it good.
Looked at a Landpride at my dealer a while ago (he got the Lucknow for me before Kubota acquired Landpride and the LP isn't built nearly as stout as the Lucknow.
Only downside is, it's blue....lol Mine has the hydraulic rotator and hydraulic chute deflector as well.
I'd say mine is about as old as yours.