Alright, here we go.
First one shows the skimmer(duh) and the 2 tubes.The tube on the left fits into the elbo.
The secone one shows just that
This one show the size of the 2 tubes. The one on the right has the o-ring at the bottom, it slides over the one one the left.
Here it is over the smaller tube (First one). It is all the way down. You can see that the main tube is about 1/2" to 3/4" longer than adjustment tube.
If there is another way to put it together I'm all ears! I can't see how anything else is possible....
Thanks, Walter