I've got a couple of smokes in on my pit and I'm starting to see how it behaves. I've modded it with a fire box, chimney extension and heat baffle. When I get a good smoke rolling through it it bellows out the exhaust but also out both sides of the lid. I wondered if it was supposed to do this and after reading a few other posts it looks like NO, it is not. How do I go about sealing this up? I've got overhang on both sides where the comes out and the smoke pours out those sides. Even with a huge fire I fight to get and keep temps. There are also 2 oblong holes on either side of the lid, looks like maybe a spot for a rotisserie to go? Any help is appreciated!