Gas leak on Atwood 8531-I’ve dclp

Bubble size will be dependent on the leak size. And yes it can be easilly missed if not soapy enough or applied throughout. Smell, is the giveaway. Check all the lines also, after checking the fittings. Good idea to tighten the fittings also, then check for again. You can turn off the propane, tighten it up , then see if you still have a smell. Amazon has knock off leakatoers, there not expensive but i have no idea how well the work. The good ones are like 300$