Just bought my first skid steer, I have been wanting one since I had to borrow my brother-in-law's 940 Mustang a couple of times. It is a an lp gas powered 742 it is mid-90's. Couple questions, it came with foam filled tires and I got an extra 4 flotation tires with it. CAn you "recap" or "retread" those foam filled tires? And I waned to know where to go online or whatever, to decode serial number. I want to know exactly what year it is. Thanks!!