I have a 48" Exmark Turf Tracer. It cuts low on the right side for some reason. I'm sure your thinking the same thing as that other post, air pressure!! I checked that, they are all the same pressure. I checked for a bent spindle, low tread, and everything else imaginable. I put spacers on the right side only to raise it up, it know cuts level, but it is off by about 1/4 to 1/2 inch. Why?!!?!? Its driving me nuts. This happens with or with out a bag on it too.