I think since I lowered the drawers a bit, to clear the obstruction, I adjusted the puck so it would still nestle into the recess in the longitudinal stringers when the drawer was closed, checking the position with the drawer closed), for me,I think, a little higher on the drawer than indicated on the computer drilled markings (I did not use the markings). Of course, I took the drawer out while the epoxy set to keep from gluing the drawer in. I used some shallow screws from the inside to hold the puck while it cured.