2000 Special Edition #2441

[— kung fu jesus —]

You can do light surface milling using sandpaper adhered to glass. Adhere the sandpaper to a piece of glass, a piece larger than the mating surfaces, move the glass around the surface and let the abrasive do the work. You can see high and low spots pretty quickly. You can to the same to the outlet manifold by laying the glass on a table or bench and sliding the mating surface over the glass.