This isn't the best picture for showing you guys what was wrong with this seat post. This particular bike had the seat post cut out for a larger motor at one time. Somebody tried to fix it by welding in a piece of tubing. It is a mediocre repair. It probably would have been good enough if we were not running a seat post, but that is not the case.
In this pic you can see the air bubbles from the last guys weld, There is tons of slag and metal inside the post, a pogo stick didn't fit in the hole because of all of the debris.
Here is the pipe cutter that I used for marking out my reference lines.