Okay..I get that. You didn't say you couldn't afford it in your original post.
When you were told you had a small leak...what is it that is leaking? And what year RV do you have? The year matters as far as finding parts. The tank isn't leaking...it's either a line or the valve.
Looking on-line, there are suggestions that who checked what and said what plays a role. If it was a pump jockey or a skilled tech. If the former, take it to another dealer for a second opinion. I see 7 propane dealers in your area. Maybe call around and see who has a tech as opposed to just a fill place.
Gary Haupt