Hey sorry if this is in wrong place as I'm new but have an important question. So i broke the pyrex in my mini protank 2 and ordered a new piece but the replacement piece does no firmly fit into the top of the clearomizer. The original was nice and sturdy in the top what's the difference? New one didnt have an oring so i just peeled it off old one and put it in space on top of clearo and added tank but its all flimsy and doesn't stick like original did. Like if i turned it upside down its just fall right out. Was original glued or something? Help!