Anybody have any ideas on what could be causing a 15 hour old Toro w/b to be leaving about a one inch strip of grass between the blades. The unit is a 36inch with the new Turbo Force deck. The grass I was mowing was damp, but by no means wet. I was cutting in 3rd gear, and backed down to 2nd. This helped to a certain extent, but not totally. Thanks for any help.