I fly a few 27% models and prefer the radio south brand ca hinge...they are composed of mylar sandwiched inbetween the typical ca wick material. Check them out at your LHD or on Towers website. I always seem to get a lot less hinge gap with the ca hinges vs the robarts...but maybe it's just me! Anyway the radio south hinges are about the strongest ca type hinge I've found and I have complete confidence in them.....