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Spark plug tube removal tool

I had an oil leak on my 98 Vulcan. It was coming out of the channel where the left spark plug is. I found that once you start getting up in mileage, the cam chain stretches and starts to wear a hole in that channel. So after making this tool I was able to remove the tube (after removing the spark plug). I found that the tube had been worn through but it had been repaired with some kind of epoxy. The chain also appeared to be tight and not rubbing against anything. The threads to the tube were covered with some type of silicone thread sealer. There were two O rings that make the seal( I assume) so I cleaned the threads and put it back together. So far....no more leak. Also, it took two people to remove the tube because one person had to hold the tool pressing it into the lip of the tube squarely. The other person tapped the end of the tool lightly with a hammer, loosening the tube. 

Materials List for tool:

black iron pipe

2- 1/2 x 3/4 bushings

1- 3/4 coupling

1- 4 inch nipple

1- 6 inch nipple

note: I had to file the flat sides of the bushing down about a 1/16th of an inch to get it to fit into the tube.

*** There is a picture of the spark plug tube leaking oil in a previous post***