I'm really glad I found this thread, I'm going to call you guys tomorrow. I just bought a 36" Stander and am having serious problems with the cutting height too. I have the c-spacers dropped as much as I can, but I haven't adjusted the arms (casters?) that come off from the deck for the wheels.
I noticed my deck is tilted forward and so the blades aren't cutting evenly and its leaving unever cuts in the lawns. I have had customer complaints and am perplexed on how to fix this. I've resolved to just using my old Exmark walk behind for the rest of the week, but I've grown so much this year from last that this takes way too much time. Please help me!