SuperHeliDave....welcome aboard, glad you like your 450i. New guy here as well, bought mine about a month back and so far so good. I did a lot of research before I decided and test drove a number of UTV's at least the dealers that allowed test drives and I felt the 450i had the best ride/quietness of all I tested. Even talked to the factory about problems with this model and there reply was almost negligible in complaints other than lack of accessories and the shifter complaint. I also made my windshields from polycarbonate sheet, both a half and an upper for winter plowing which will come off when it warms up. My dealer ordered a quad boss plow kit which is a great plow but the universal mounting kit is a complete joke. As a toolmaker I made my own mount that attaches to my frame, just putting the finishing touches on it now. I just did the first oil change and differential gear oil change, switched to all synthetics thru out. Mine came with the factory roof, a little pricey but looks good. Still trying to find a factory service manual in case any future repairs may be needed, but not having much luck yet.
I am semi-retired and this is my retirement present to myself. My grandkids were not happy about me getting rid of my ATV's in favor of the UTV.....but now that they have had a chance to play with it....they are glad I made the switch, the UTV is so much more versatile and just plain fun. Please do keep us posted on how things progress with your 450i and I will do the same, this goes for any other 450i owners out there.