Thank you all for the helpful input! To answer some of the questions, I live in the midwest (USA), so no temperature or humidity extremes, my layouts are in page protectors in albums standing up on a shelf in a room that gets sunny in the afternoon but they are not in direct sunlight. I never use glitter paper or anything much besides regular cardstock and patterned paper. I've decided not to use tape runners anymore. I've been using Tombo mono lately and I think I'll stick to that (no pun intended) for a while, although I've noticed that if I apply it too generously it can cause a little buckling of the paper (but not cardstock). I'll look into the ATG and Glue Glider Pro too. Thank you all so much again!