What are you sealing-filling the joint/gap on the dome with. Is that The solid flue or is that the stuff around dome on the outside of the dome? I am told I do have 4 layers of blanket on this oven.
I am convinced I have the same oven you are repairing. Could you email some detail pics of the inside -outside of the oven please. I have a crack- chip-chunk loose on top of dome now which Peter came to fix. We will see how it holds up. But there are similar size gaps on the joints in my oven. With all that said , no worries , cooks neapolitan quite well what's the floor insulation you are using under the forno? Also did you ever consider putting the Tuscano on the trailer?There are used trailers by me for sale I am looking at in the 800$ range. Also like the enclosed idea they shown the fire with in site. But would want the oven in there for sure. Need a good torsion axle and modifications to the shell to get hearth in place but seems as you probably know a good welder as well.