Proof of Concept Hi All, Some time ago I posted about doing this (sleeving the tube with a polymer) and I don't know where that was. But anyway, I completed my first medical experiment on some used emulsion tubes donated by Mr Grey. I see no barrier in doing this and I expect they will last multiple times longer than the OEM. Waiting for more tooling bits to arrive before it all goes public. Mr Grey and Gert, another forum member, have volunteered to try them out on their bikes. There are many other bikes that use these style of tubes and they cannot buy Keyster kits nor OEM parts, so this will be good news for those owners. Cheers Blair ps. Also am doing a mod to the slide to stop the vibrating needles which is the cause of all these problems.