I am building my first ARF kit- a SIG 4*60 and need some help on the CA hinges. I read some posts related to this, but wanted to make sure I'm doing it right.

The hinges measure .7" (W) x 1.0" (L) with a slit running lengthwise and centered widthwise. Does the slit go parallel or perpendicular to the hinge line? The instructions show two T-pins sticking through the center line on each of the hinges. Am I supposed to stick the pins through the slots, or stick the pins through the hinge elsewhere?

It appears the pins are used to both center the hinges between the aileron and wing (in this example) and also set the gap between the aileron and wing. My T-pins are .043" in diameter. Is that gap dimension OK? I heard that if the gap is too big between the wing and aileron, it can cause problems in flight.

I also read a previous post that said the slot should go perpendicular to the hinge line. Is that right? Also, does anyone have any special tips on installing CA hinges? Thanks very much for your help.