Drain tubes are located in the transom, 1-1/4" diameter x 3" long(brass). I got the parts, and gave the job to my mechanic. He thinks that the 3" tube might be too short (concerned wtith duplicating flange on the end) Called Grady, they said that some transoms came out thicker than others, this could be why. They did state that the correct part is 3", but i might have to get a longer one and cut it down. The tube that came out looks to be the same size as the new one. My mechanic thinks that after sealing tube properly, it would be fine. Any body tackle this project, and if so, what was the outcome ?