I got a great deal on a bathroom vanity and mirror combo that was scratch and dent and just needed a couple minor repairs to make it 100%. One of those things was the mirror was broken on the wall-mounted vanity storage area. I figured this was easy enough and just removed the broken mirrors and then took an existing mirror I had and had it recut for me on the cheap. It looked great. I glued it on and clamped it overnight but then after a few months, these marks started to develop where there is glue behind the mirror. I just used standard liquid nail. Granted the mirror is probably fairly old, but I didn't expect this to happen. If I do this again is there a different kind of adhesive I should use to attach the mirrors to the door fronts? Thanks!