K, thanks Nooc.

Just talked with PCCaseGear, the Cool Sleeves they have is not suitable for the 3/4" O/D Tygon. They used to get some that was suitable for my application, but the manufacturer no longer makes it.

They said some people have wrapped ordinary wire around the kinks

I might just go for a couple of cable ties for a temporary fix, and start leak testing. Need to get my main pc back up