OK, I'm back with some more info on the problem of filling and checking tire pressure on the inner tires of our MH. I went to the auto parts store today and bought a truck air chuck and a regular chuck. Neither one will reach or depress the valve core to let air in (see following pic). Also, looked for longer valve cores, but they only had one size. I thought they made longer ones, so they would be closer to the top of the valve stem. Wonder how they filled the tires in the first place. Probably before they put the extenders on. Would like to fix the original rubber extenders that were put on by Ford or FR, if not, guess I'll have to spend the bucks on some new ones as suggested in previous post.
1968 tent trailer
1985 Jamboree 23 ft
1997 Minnie Winnie 25 Ft
2016 Forester 3171DS (ordered March & arrived June 2015)