Propane leak

So here is my issues, I have not found anything over the Internet yet about my strange propane leak on my 1999 bornfree. I have had the RV for a year now and last September while driving in hot weather just after filling my propane tank we started smelling it in short intervals while driving down the highway. It started 20 mins after it was filled we had the propane on to keep the fridge cold. After the 4th time we smelled it and it lasted longer than 5 mins we pulled off the highway got out and notices propane spewing out. It didn't last too long. We shut it off immediately tried to call around to propane dealers but nobody would seem to help us. I spoke to my father who told me to keep it off and don't use it. So we kept it shut off and continued our drive. With the propane off once every 30-45 mins we would smell it again with it shut off. Skipping ahead we had the same issues while coming home just not as frequent. Didn't have an issue since until the end of july this year on a 85 degree day. We still didn't use the propane on any trips since the trip back in September last year.I have noticed it happens with elevation going up and down on hot days on those twords trips. I am stuck on what the problem could be. Anybody out there have the same issue or heard of something like this? I am about to take it in but I wanted to hear from others that know what it might be.