JD 165 Hydro cutting crooked

The problem is that when using the mower, the grass is cut on an angle. The height is set to "3" (inches, presumably). I have adjusted the wheels so that they"re juat 1/4" above the ground (as indicated on the label), and checked the deck height on both sides, with the tractor sitting on level ground in the garage.

The grass is stil cut on an angle - the chute side of the deck gets cut much shorter than the opposite side, even though the wheels and deck are level! I"ve tried fudging the level on the non-chute side so that it"s lower than the chute side, but it only marginally helps.

Anyone got any suggestions? Naturally, I have no documentation for the tractor, so it"s somewhat of a voyage of discovery whenever I need to do something (and considering I paid $500 for the tractor, it"s hard to justify the $100+ for the manual).

Thanks in advance,

-Dale

I always strat with getting it on a concrete floor, airing up all the tires the same and then get my old body on the floor and measure how far the blade tips are off the flor. That is the true cutting height.

also you did mention that you verifiwed that none of the blades were bent or out of alignment?