I need a little help here. I have a 4* I'm ready to install the ca hinges.

The hinges are rectangle shaped 1 X 3/4 inch with a slit running 3/4 of the 1 inch length in the center. Which way do I put them in?

They will go in both ways when I pulled the Aileron off per instructions they were in about 1/2 on each side.