You might be able to save the $13. If you don't already have the new regulator try turning the bottle off and then disconnect the hose. Actually it looks like you already did that part.
Remove the tank and see if it actually feels full. The tank gauges only tell you if there is pressure in the tank. The problem is there is always pressure until you run out of LP and then suddenly there is no pressure.
If you can feel the propame sloshing around in the tank hook it back up to the regulator and turn it on very slowly. Now use the stove to bleed the line of any air. Then see if the heater works.
If no heat then you could try the regulator.
1996 Suburban 4x4. 350, 4.10 3/4 ton
2005 Jayco Jay Flight 27BH
1986 Coleman Columbia Popup.
Nope. That bottle seems to have less gas in it but I tried it anyway. I didn't take the regulator off the barbeque. The regulator on the tent trailer has two round body housings and the one on the barbeque has only one.