I feel like a jackass but here it goes. I have a 25hp johnson 1982 motor I was sitting my hammock looking at my motor tilted up and was pissed on the phone and started tossing some small stone at the motor. I noticed that one went into the underwater exhaust and water outlet. IS THIS SEALED? Can a stone get up there a do some damage? I tilted the motor down and nothing came out. What the hell did I just do???? Anyone help would be great.