I thought I posted this earlier, but I guess it never did get there. I'm looking at buying a late 90s grasshopper mower, I believe a model 725K, real clean unit, just needs the blades sharpened, and an oil change done. the owner is also the man that owns the storage place my boss keeps his trucks and chipper in. a great guy, I'm hoping I can get some advice on what to look at on this machine, idea of what its worth, and all that. any help would be appreciated greatly. thanks in advance.