I bought an ASM G-2 Protein Skimmer used and it came with a 1 1/4 inch hole but no bulkhead or inlet pipe connected, so I need to find one to connect the pump. Does anyone know where I can find the needed part? All I can find is a rubber bulkhead and I'm not sure that will work. My old ASM skimmer had a smaller, 1 " hole, so I can't use the old part.