I purchased a wallmount fireplace. It was what i wanted but it was really tricky to put together - for the directions were minimal! Anyways, after it was up and running - I really like it! Then after about. 5 times max and only having it lit for a short time period each time. anyways, i noticed the top of the inside is melted. It was covered with a felt and under that insulation but it is melted!!! What the heck? I don't want to take it down and return it! Can i just take off the insulation ?!?! I have tried to contact the company but they have not replied (not good) Any ideas?