Greetings experts, I hope someone can help me with this very weird problem. Monessen and their guys can't! O.k., here's the basic info, new house with a vented fireplace. since October we have burned up 4 valves on our lp gas log fireplace and no one can figure out why. Here's all the facts and numbers.....we live in central Florida, inland with normal wind currents.......firebox dimensions - height 30", depth 23", front width 35", rear width 22", flue is 10" diameter and about 25 feet high with one bend-about a 30 degree angle-that starts about a foot above the firebox and is about 2 foot long. Back in October the gas log technicians installed a 30" monessen duzy set with a remote control. They set the flame height and all that stuff. It lasted about 6 or 8 hours and the valve melted....so they replaced it....it melted again......they put in a Petersen log set...it melted that one too. We then went with a 24" log set, positioned it all the way in the back....it melted after about 6 hours total use time. The technicians have given up, they said they are done. I think we built our house on sacred Indian ground and we are just plain cursed. I have pictures of the melted valve, the firebox and anything else that might help. Monessen told me that they think the flames are being pushed down and that is why the valves keep burning up, their solution is for me to get a log set with no remote.......that may end the problem but it doesn't tell me WHY the problem is occurring-if that's it at all-and what could be done to alleviate it. Any help would really be appreciated. Thanks.