Thanks guys. There is a lot of vital info here. I'll leave the pins in and do the flexing right after the CA. I've had an arf before with preinstalled surfaces where the hinges were really stiff. I don't want that to happen with this plane.

If I need to remove any excess CA, I've got CA debonder handy as well.

Thanks again. Got the ARF a few days ago and I've been putting off getting this assembly started because I've been unsure about the hinges. It's a really good quality plane for a trainer otherwise, so nice to know that I'll be able to make sure the surfaces move really smoothly and easily (while still being good and strong).