I Purchased a X739 with a 54HC deck and MCS mulch control. JD advertised mow your lawn with mulch on and flip the switch and go to MCS. All sounded great. Mulch the front yard and pickup the back yard. WRONG. I went today for my class on the mower. The tech asked how do you want the unit delivered. MCS on or mulch. Different set of blades for each. Heres the big problem. There is a bracket that has to be bolted on so if in mulch mode so blade won't hit the mulch gate. There is no reason the have a had ram to switch modes when you need to bolt on a bracket to mulch and take it off to Collect grass. I am very disappointed I spent the money for the mulch kit and hyd control when it cannot be used. Just about as bad as the manual control for spout on the snow blower. If I am wrong about this let me know. Not a good start between me and my739.