The other day I started using my Ferris 36-inch walk-behind for mulching, and it's not working well at all. The deck is so close to the grass that it just seems to push leaves out of the way. I thought about getting a bagging system, but with this problem it won't bag leaves either. I tried putting two of the spacers below on the front wheels, but it does not raise the front of the deck very much. From what I'm reading in the owner's manual the front of the deck has to be about 1/8 inch lower than the rear for proper operation. It's mulching the grass fine, but I'm still left with tons of leaves on the lawn. The mower is set up properly - it's not on the low-cut setting. Does anyone else have this problem?