im having a problem with my mylar staying. i got a tent from htg supply. my exhaust is so powerful that the sides of the tent literally suck in. everything is going great, but over time my mylar loses it's position and it's a pain to keep fixing it. im doubling up duct tape on the back right now to keep it up. double sided scotch tape worked like shit compared to it. i dont want to use anything that will pierce the beautiful tent material. what does everyone use or what do u guys recommend. thanks!