I installed a Radiantec undefloor hydronic system 10 years ago when they were selling the 7/8″ pipe with barbed connectors and hose clamps. This spring I had 2 fittings leak. A couple of friends  who installed the same system also had leaks after 6-7 years. Some fittings are buried  between floors. It’s been a nightmare. Has anyone had the same problem with the Radiantec system before they went to compression fittings?