I'm a total novice, trying to help a young friend in the Grenadines deal with a problem concerning his 1990 Johnson 225. We can only talk on the phone, and I know precious little about boats. He's asking me to procure for him a "steering tube" which he describes as a hollow metal tube, about 15 inches long, give or take, threaded on both ends, that is hollow. Can someone help me understand what this part is, and how I can get a new one for him? Please forgive my lack of knowledge. Just trying to help someone in a difficult situation. Thanks very much.