Holy Moly, there are no bailer tubes going to the Ibr actuator there are cooling tubes, one in one out. One coming in from the jet pump, pressurized, one going out to cool other components which eventually is expelled thru exhaust. The exhaust flushing back flushes this system so when you back flush water should come out of the jet pump if it is not the system is plugged and you won't get ibr actuator cooling which could cause a ibr overheat. Important to regularly flush your exhaust to make sure your cooling system is functional. The ibr system in a Seadoo is complicated to say the least. Unless you have a service manual and a buds reader I would leave