Still not sure of the schematics of those pits..but will have to agree with Smoking Okie. A Wally World hot plate..a pie pan..and a chunk or two of wood is the solution to a lot of cold smoking issues. The old frugal prevert used to show folks how to make a cold smoker out of a cardboard box. Worked pretty danged good.Its all a matter of something to contain the goods and the smoke without making a lot of heat. In my view cold smoking happens below 140 f. For the non electric folks a pan with couple of lit charcoal briquettes and a chunk or two is also rumored to work.Kindly keep us posted on what you come up with. Thanks.