Changing tires is getting old real fast. I just bought a tire changing machine from j.thomas and it worked good to get the tire off but not so easy getting them back on. One of my mowers have zero flat tires and the ride is not so great so i wanted to stick with the air tires but the amount of flat tires and the hassle of chaniging them is getting to me. Is there a shortcut or an easier way to change them. I want to stay with air tires (for comfort). Is it worth the hassle of changing them yourself or just get it done at a shop.