Hangman.........the art of vacuuming money from one's wallet has been perfected and it takes everyone of us working together to minimize that event. Few here have gotten away unscathed so welcome to the club.

You will need to develop an understanding of your coach, its systems, and either how to do your own work, or who to have do the work. Further, when you engage someone to do the work arm yourself with the knowledge of what is involved.

To address your two specific issues, it is possible to ruin batteries in your coach quickly. For example, if you have a charger running continuously and it is not the kind that has 3 stages or some current sensing capability you can "cook" the batteries. Letting batteries go dead and then recharging them significantly shortens their life. The care and feeding of batteries is important because they are not cheap. But if you want to avoid surprises, learn your charging systems and how to properly charge and maintain your batteries. There have been many discussions on this forum that a search will turn up.

As to the leans and trouble with the leveling system, this tends to be an area in which the less knowledgiable will end up spending thousands (not kidding) if they just turn their coach over to a service facility and tell them to fix it. Our leveling systems vary from year to year and converter to converter, but they all share a basic operating principle that is not that difficult to comprehend. The problem is that if as an owner you do not develop a little understanding you have just opened your wallet and given it the man with the vacuum.

Simply stated your suspension needs to be maintained. If it is not or has not been maintained it needs to be brought up to a good condition or you will be chasing problems forever. Leaks are the primary problem and no amount of soapy water squirted on fittings is going to identify the problems. It is easier and cheaper to isolate the problems and then methodically replace the components in question. You do not have a single suspension system, but three separate systems that share an auxiliary air supply source. You have a front, left rear and right rear system.

As to why it does not respond to commands, that could be as simple as a failed solenoid valve located in the steer compartment, or an incorrect air bag. If nobody has recently replaced the air bags I would start investigating the solenoids. As silly as it sounds you can do almost all the diagnosis, one step at a time with help here to isolate probable causes. If the problems regarding raising the front are what seems like a failed solenoid valve you can fix the problem with the removal of two screws, the replacement of a valve and restoring the two screws.

What you do not want to do is pay for on the job training of a service tech.