Has anyone mulched with the Exmark Navigator 48" yet? I have heard that they have a mulch kit available even though Exmark's web site does not even address mulching on the Navigator page. I am wondering about how well the shallower deck (VS the other Exmark decks) will mulch. The deck on the Navigator is only 4 5/8" deep while the Ultra deck is 5 1/2" deep and the Triton deck is 6" deep. I realize that this compact front-mount was designed to primarily bag, but I would like to have other options with a $11,000 unit. Since a side-discharge deck is not currently an option on the Navigator, I would like to know if it can do a nice job of mulching 3/4 of the time. I really want to like this machine, but I worry that a 4 5/8" deck will be too slow to run in mulching mode. Top speed of the Navigator is 7.0 MPH. I wish Exmark would at least offer the option of putting a larger (and deeper) side-discharge deck on the Navigator that could also be a switched to a decent mulcher. Kind of like how Walker did with their 52" combo deck. NOTE to Exmark: It all about having the right options to broaden this segment of the market. After all, you already have a 52" front-mount "Ultra" deck on the frontRunner. Can't you configure this 52" deck to fit the Navigator? The power source should not be an issue with the 27 HP Navigator.