I seem to have a problem with my rear tires on my 2710. Everytime I try to lift this rather large boulder with my loader, the rear tires develop an air pocket right under them. So I proceeded to load my 6' mower on my 3pt with all kinds of heavy logs to conteract this problem. No avail! Could there be helium in my rear tires? Or is it just as Kubota's add suggests, my tractor is analogous to an ANT?