I know that I could take it to an RV shop but I'd like to know how you test the connections to see if you're propane system is fully sealed and safe. I had to disconnect my cooktop stove and remove it momentarily today and now after I re-installed it I want to check for leaks. I have a propane detector and I don't smell any propane in the cabin but I have to be certain 100%. How do you use the leak detectiong solutions or soap and water on the connections? Can you use it on all the connections effectively?