I have this Toro 36 T-bar I bought a few months ago and I was having problems with grass being uncut when I go around a curve. The faster I go around a curve the more grass would be uncut. I figured it was that the blades don't over lap enough. So Jump forward to last week. I raised the blade by half an inch (one spacer) and the problem with the uncut grass got much worse, more pronounced in every respect. I thought it might be not enough suction so yesterday I lowered the axle, the rear of the deck. I was going to lower the castor wheels too but I looked at it and it looked fairly good. I went to mow with it and it has NEVER mowed better. NO uncut grass at all. Now I know (I think) that I had TOO much of a pitch in the deck. I heard all the advice of having the front of the deck a bit lower and mine was noticeable slanted. Now it's basically level I think and it cuts better then ever.