Hi all, I am considering trading my current X575 in on a X758 with a 54HC mower deck and was wondering what the big difference is between the powerflo for the two decks. Is there anyway to make the C model fit on the HC mower deck. Also, how is the cold weather start of the X758? Should I consider a block heater for it or does it start better than say a 1025r, which is sitting in my garage. Just a couple of questions to help me along in my decision making.