I used ca hinges once back in 74 when ca first came out in a super questor glider .elevator hinges broke at the hinge line on the pre flite will never use them again,used klett and dubro and the robart steel pin hinges never had a klett or dubro hinge fail or pull out in over 38 years.It amazes me that even after a crash of a scale plane beacuse of ca hinge failure the owner still uses them.