I recently purchased a 52" square deck Bunton W/B. Replaced all the spindles and belts and it runs like a champ. The only problem I have now is adjusting the height of the deck. Using the owner's manual, I bolted on the stub axle plate in the position that should give me a cutting height range of 2.125" to 3.375". The problem is I can't bring the front of the cutting deck down to that height by adjusting the caster wheels. I have no spacers between the caster yoke and the support bracket and the front edge of the deck is still an 1" or so higher than the backside. There doesn't seem to be anything else I can do to bring the front end down. The only thing I can think of is that the machine has the wrong caster support brackets on it. They certainly look exactly like the replacements they sell at Landscaper Supply so I'm confused. Anybody habve this problem? Thanks in advance for any advice. Joe D.