Rick,
First, I have not worked on you exact chassis before, but I can help with some answers. The normal operating temperature on your coach should be between 180 and 200 degrees depending on operating conditions and gauge accuracy. The 210 to 220 degree readings are too hot. The hydraulically driven cooling fan should run at idle (slow speed) all of the time until the engine needs high air flow to cool the coolant to maintain normal operating temperature. At 210 degrees and 1500 RPMs, it should sound like a small jet engine because that large fan should be pulling 30 or more HP from the hydraulic system.
Second, all leaks should be fixed. However, the leaks may not be the reason for your current overheating condition if you are positive the coolant level is full. A coolant leak will result in low coolant levels that can make the fan control inoperative because it is not in constant contact with liquid coolant if an air pocket develops. If the hydraulic fluid gets too low, it can damage the pump and compromise the power steering that runs from the same system.
If I did not answer your questions adequately, feel free to call me and I will try to help you further.
Gerald