Someone lent me an older model...Little Giant still air.I am just setting it up with no instruction booklet.There was a flat oblong piece of meatal inside with holes in it...Not sure where that goes.I I am trying to maintain 98 or 99 degrees,it is up to 109...Does it take a while for the temp to level off? It's only been plugged in a half hour or so.I would appreciate any help I can get.This site has been great and I have learned alot...But I think I need a little specific help...Thanks in advance.