Are you sure it doesn't say "low viscosity" ? That means thin, which is what you should be using.

Fit them dry then add a FEW drops of thin CA on each side. Provided the slots the hinges fit into are a good neat fit they're fine. Note if the slots are too tight the glue doesn't get in properly, if they're too sloppy it doesn't stick well. Don't try to glue them in one side first and then fit them to the moving surface. They must be correctly positioned before you get any glue near them.

Steve