I take very good care of my equipment, greased routinely and not beat at all. Only used for mowing and pulling a leaf vac in the fall.
The warranty is one year parts and labor, the frame and front axel are 5 years parts only. Thus the estimated cost of $400 was for the labor to switch out the frame(mower is over the one year warranty period), if it was bad. It was $96 just for the service guy to come to the house.
I replaced both spindles, both drag links, all wheel bushings, and the plastic steering bushing, still had the exact same condition. The plastic bushings that the spindles go into on the axel seemed fine. Tried to replace them also, but you can not buy them. Parts direct said that they are not available. Looked all over the net and could not find them either. There is a replacement front axel (different part number) that you can get the bushings for, but they are not the same size(I bought them and tried). The front axel is fairly heavy duty, and I can not see how that would be bent (never hit anything). To be honest, not sure what caused the problem.
My buddy took the drag links and made them so they now have adjustable tie rods at his tool shop, it was no little project since they had to be milled down and threaded. Not easy to mill down do to the shape of the drag links. The problem is now fixed, though I still am not sure what caused it.
Mower does mow great. But I will still be going back to a Deere next spring.
I know lots of people who have older Craftsman mowers that have been to **** and back and keep going. But the quality of products these days are not like they used to be.