I screwed up building a drawer to go underneath our kitchen sink. I forgot to allow for the 1/2" on each side for the slides. Now I am wondering why I could not just put the slides under the drawer? I do not have much vertical room, as I built the drawer to go underneath part of the hinges, but can accommodate the 1/2" rise the slides would create. That would not be working the ball bearings correctly, but it seems to be sturdy enough to handle the small weight that is will be carrying. Thoughts?