someone that doesn't want to have an old oven on the side of their shop tip: Hang the painted exhaust pieces (typically how I paint them anyway) and pre-cure the coating using a propane torch thru all of the inlets and outlets. Keep in one opening until that area starts smoking off, go a bit longer, and then move to another one. Rotate around doing each one a couple times. Greatly improves the durability for handing and mounting and has proven to be a very good first step for longevity. Plus helps protest against chemicals during the initial install and replenish of fluids in the area.