Does anyone know where to buy large assortments of plugs and caps. The sets that I have seen only go up to like an inch in size. I have them, but now I would like to have a set from 1.5 inch up to 5 inch instead of buying them seperetly. Do you guys clean them or just throw them away. What is the easyist way to clean them. Maybe you are supposed to pull them out before you cure the powder. Any info would be great! Thanks!