Eric,
SMC issued a service bulletin with detailed instructions on how to move the front axle forward to accommodate a larger size tire on the early Magnum chassis that was used under Patriots. I only know of a few owners that had the modification preformed and they have all retired from RVing, so I do not know how to contact them. If you can talk to Sean Lakin, the service manager at BCS, or Scott Dyson in the parts department, one of them may remember the bulletin, but I doubt that anyone will be able to find a 23 year old bulletin.
One of the coaches that had the front axle moved was in Florida, so a call to Josam Frame and Alignment in Orlando may be productive.
Gerald