sounds good. careful with that new machine and good luck with it. spacers prolly work. Consider welding the castor wheels out of the way just good enough for clearance if need be. that's what I would do if I had to make it work
BigMike50, Well the 3520 I have had since 2008, so it is not new, but when I get the 72D AutoConnect, now that will be new! I think I am gonna go with moving the anti-scalp wheel on the rear right over a few inches and that should take care of the clearance for the Turf Specials.
Plus, I am not as experienced as you with regards to working on dozers and equipment where sometimes you get placed in potentially precarious positions - yep I am definitely chicken LOL!. I do not want to be the first one to post a pic of an overturned 3x2x series