Hi all, I bought the Char Griller Pro from Menards this spring and so far its worked okay. I have only been using it to BBQ w/o a SFB and have had no problems so far. I was using my Weber Kettle for grilling and such but had to retire it. Today I am making a beer can chicken on the Char Griller but I cannot get the temp to go over 275 no matter how much charcoal I throw on. When I first bought the grill I noticed a lot of smoke spilling out of the sides and the chimney. I sealed the chimney with sealer and bought 3/4 inch hosing to seal the sides but apparently the size was too big as I could not get the vent to close more than halfway with it on. I didn't worry about it as I was not having any trouble maintain 250 degrees but now its a problem. Can anyone tell me what size tubing I should use, if that is even the best way to do seal the sides? I realize this has been covered countless times on countless sites but I am looking for some specifics. Thanks!