Propane tanks

Not too long ago my neighbor came over to tell me my TT was hissing and smelled strongly of propane. The auto switchover regulator was leaking. I shut off both tank cylinder thingies and ran drove 44 miles to the nearest Camping World for a new one. Oddly, they didn't have the yellow tape thread sealant for gas connections. Had to find a Home Depot for that. We got lucky that day as the fridge was on gas and the wind was blowing the leaking gas toward it. No gas smell now. The new regulator works great. I have both cylindrical shaped portable tanks on and rely on the red flag to refill, checking every three or four days. Get that leak fixed. A propane explosion can obliterate a TT and it's occupants.