Our HR Traveler is listed as 29' but is actually 30' and is identical to the 29' 2-slide Safari Trek from 2004 to almost the present. If you are comfortable with less length a shorter Class A has some great benefits, especially a higher end rig like Holiday Rambler or Safari Trek.
With 30 feet you can drive right up to a regular gas pump or up to the front door of WalMart, park in two end to end regular parking spaces at the store or just about any space at any campground. With lots of storage and features like ice-maker, big tanks, 2 electric slides and two-pane windows, just to name a few, you can travel very comfortably.
With a shorter rig and no towed car you can go anywhere and pull in to a spot and be set-up in less than 10 minutes.
Good for those that travel most of the time.
Class A is an RV built from the frame up on a bare frame with engine(no footage defined). Class C is using the front cab of a vehicle only and Class B uses the cab and body with some mods.
We never had a problem but then in the last year or less it has become a problem. I've filled every little crack that was there but the "rats" keep chewing their way in. They just laugh at mothballs and can clean a spring trap with 80% safety (the 20% was a real rat - what a mess). We have to park at home on the dirt(sand) near the barn so the worst possible conditions..
I would take it to a propane dealer and have him fill it. If it takes a little bit then the pressure valve must be bad. If it takes a lot then the gauge is bad. I would also run it to the point where things stop working and then open the line and see if perhaps the tank is full of water or something else not flamable. I'm not an expert though - just a cut to fit and wire to work guy.....