I had a custom run of tubing made, black and double thickness of what is available off-the-shelf. This should give better insulation, as well as a very sure grip when locking the basket in. Will be installed a little lower on the production units, the scrap tubing I had to test fitting was a little short. Preliminary mechanical test is very positive, feels nice and doesn’t slide. Will be doing some heat tests to see how it holds up and how cool it stays with steam running though the tube.