My original coolant reservoir cracked. The new OEM reservoir is more robust and have had no problems since. It's still plastic and you can shine a flashlight on it to read the fluid level.
"I guess whoever put on the exhaust system didn't install a new gasket on one side as seen in the photo below. The pipe on the right is missing the gasket. Makes me wonder how quiet the trike is with the gasket in place?"
The OEM gaskets burn out after 1,500 miles. Install Honda 18392-MAM-000 gaskets on both sides. They last much longer, cut the heat down as well as the sound.