Robart suggests useing white glue on theres and I have used 30 min. epoxy also. Alignment is important doing these hinges and I pre-drill all my holes prior to assembly for perfect alignment every time. Holes in both pieces are counter drilled for the pivot head and the tapered surface has a cross sanded relief so hinge will operate without binding. Prior to install I put a drop of 3 in one oil on hinge and work it in then small dabs of vasaline at sides of hinge wiping off any on the post then install all the way in to hinge pin center of the moving part. Glue is put in hole first and spread with a tooth pick and just enough on hinge to fill the barbs. I have never had one bind up from glue getting in the hinge.