I have a 1986 85 hp force, the exaust exits out the prop and an exuast port 1/2 way up between the lower unit and power head. on the inside of the motor a rubber baffle connects this port with the actual exaust port from the the motor . inside the rubber baffle is a spring and a white plastic disc that the spring end sits in .The plastic pc in my motor looks like it was melted and half blocks the opening for the exuast to exit . does anyone know what purpose this part serves and can i just leave it out on reassembly . if it is just a devise to hold the spring can i cut back the plastic to open the passageway and reassemble????