Just installed TST on my F450 DRW. I put flow-through on inside dual and regular 507's on the rest. I had to remove the anti-theft device and had to remove small flow-though valve caps that came on valve stems. It was a little tight with my big hands but doable. Then, had tires rotated (I removed sensors before taking it to the tire store so they wouldn't get mixed up/damaged). When I got truck home, they had moved dally wheels so both inside and outside vale stems were in same location. Now, I couldn't get my hand into do inner wheel and had to have my DW do it. Since we were leaving on trip next day, I didn't have time to do it before we left but will be one of the first things I do when we get home as now I have to have DW remove little valve cap on inner wheel, and replace it when I am done, checking tire pressure.