Great work Chris.
Working on a lab I'll have to make just one comment.
We should test the fadigue of the tubes under bend. For example, will the 7/16 MasterKleer hold its form under the 3" curve over days and months? As long the tube holds its properties it should work but I really don't know how long it is going to hold it. We could do a poll for everybody post if the aging tubes started to kink after months installed.

This post deserves a sticky!