I would like to put chains on my 4615 but have a concern about clearance. I'm looking at standard, ladder type chains with cross chains every 4th link. The cross & side chains are 3/8" diameter. I have the same chains on one of my farm tractors and measuring those and comparing to the side cleance on the 4615, it looks too close to risk ordering the chains & finding out they don't clear. Anyone have chains on their machine and could tell me the side & cross chain diameters. I have old tractor chains that measure 5/16" diameter, but haven't been able to find any to purchase in that size. Thanks.