So finally got one for my 1070. I bought this 3” to 4” exhaust reducer (Walker Exhaust Heavy Duty 41989 Exhaust Reduction Pipe https://a.co/d/8uT6wKM). The 4” goes into the pizza oven, there’s a flange that stops it and the 3” part goes into the fire box of the 1070. The only thing I had to do was cut a square out on one side of the 3” end to allow the pellets to feed still. Other than that it worked great. Not perfect but great. Set to 420 the stone got to around 7-715 after 30min. Made some great pizzas.
