We're using a 10.5" wide tire on about a 7" wheel, for a SS-15 pulling tractor in stock class. The tire size is limited by the class, but we would like to mount a wider wheel. I have found a wider set of wheels with about an inch deeper offset on the inside...which would put the tire to far in, and rub the inside of the fender. So, here's the question.....I see square head set screws that appear to locate the hub onto the axle. Can I slide the hub out an inch on the axle to get the needed clearance ???? or is this something I shouldn't even consider.