Motorhome Leaks

The 1988 Itasca Sundancer motorhome that I live in has multiple leaks. My guess is that it could handle 1 inch of rain, but not 2. The latest leak developed at the front roof hatch. And it was like a hemorrhage. Looks like I'll have to take a chance on sealing the roof very soon?

It's got this grey stuff up top that's like a ridge on the front and back. My roof is metal, but I'm concerned about the fiberglass body it's also adhered to. My thoughts now are to try getting the back one off. That way, if something goes wrong, I might be able to use some long sandbags to temporarily seal it? I may even be able to redirect the water flow temporarily?

Hot Water Tank, LP Gas Alarm, Roof Seals

The replacement hot water tank and propane gas alarm for my 1988 Itasca Sundancer Class C motorhome is ordered.

In order to survive another winter, I'll have to see what's going on with the auxiliary battery capacitor?  I may have to replace the electrical lines to the generator, but right now, I don't know what to get that could withstand low temperatures?

The auxiliary batteries might be needed to keep the pilot lit in the overhead heater/ air conditioner?  I'll have to ensure that they're full and I need the on-board battery conditioner to do it when the power converter is plugged into the AC source.  Also, the motor home is more than 2° pitched back right now.  I may have to seal the roof in order to get it to within 2° in order for the pilot flame in the heater to make proper contact?