I just bought and installed this unit and am very happy with it except for the fact that when stove is set at 5-5 it tends to kick the blower up to high and then drops back to the set speed after about 5 minutes not sure if this is normal or not. I did do a search and it suggested to loosen the the thermocouple and/or put a washer underneath it, this doesnt sound like a safe fix to me but if it is i will try it. the stoves bottom 3 buttons are set at 1-4-1 and its a corner install with an a adapter to a 90 to a straight to a 45 out house to tee and up 6ft to a 90 and cap. oak is also hooked up. this seems to happen more frequently with gt's than gs's if that helps any. Thanks to all on this site if it wasn't for the wealth of info on here I never would have tried this form of heat.