Well I have no idea how I cured this. :dunno: Took the deck off AGAIN. Removed the blades and examined and measured everything I could think of. Cleaned, lubed (FYI the zerk fittings for the spindles are on the under side of the deck) and reassembled. I may have swapped the blades around, and I know I swapped the spacer between the blades and spindles to the opposite side. I think Snapper calls this a spindle washer. I have given up on trying to measure level, I just "mow and tweak". So I eyeballed it level, and didn't even have to tweak it afterward. It's a thousand percent better! I'm still not completely satisfied with the quality of cut, but my wife is calling me obsessive and threatening to buy me a "grass micrometer" :ROF, so I guess it's good for the rest of this season.