i have some suggestions for you, first is, PSTN can be stopped if you set its CTYPE to something, then it will not be able to push that material you set it to, second is the 2 middle rods heat up and have nowhere to place the heat, so i added HEAC to them in my suggestion save (along some more too, such as doing insl on the heat switch buttons so they dont melt, and the dam piston changes too) id:3304436