Sold her for $30,000 yesterday. She was my maiden voyage on the water as an adult with the family 😂 sad to see her go. Appreciate all the support & feedback from the Malibu Crew since day one ♥️

Keep trying, it is fun. Do you have the horn and lights on? Once you get over then you have to try going back which is another challenge. I will sometimes slow the speed a little and reduce the wedge position. 

The cap on the coolant reservoir has a pressure release of about 15 psi.  The most common coolant leaks I've seen are from the hoses, clamps, or fittings on the cabin heater loop between the engine and the heater circulation pump.  Using a coolant pressure tester is the best way to find coolant leaks.

The plastic "RC" cover most likely belongs to power module #2 which is located behind the surgate/power wedge breaker panel in the port aft storage compartment near the engine. 

I just went through this with a SeaDoo. Ultimately I put tell tales (I.e. white shop towels tie wrapped in position) around the engine bay under every coupling for the coolant and under the engine coolant leak fitting. Turns out I had a cracked hose along the bottom of the connection to the supercharger. One new hose and worm clamp later and my woes are gone. Diagnose. Diagnose. Diagnose. 

I did this mod 8 years ago and I’ve known to the gallon ever since - across three new boats - what my fuel level was. Just go fix the problem yourselves. Malibu would charge you thousands. It cost a couple hundred really. 
 

https://www.wakegarage.com/projects-archive/miscellaneous-projects/accurate-fuel-flow-gauge-r110/