My Rohl kitchen faucet is about 8 years old but is now leaking. I have no paperwork on it. I need to locate instructions on how to disassemble it and replace warn parts etc. Many faucets have some sort of starting point such as an allen screw or something, but this faucet has zero. I checked the Rohl website and the faucet is there but no diagrams to help. any other places to look before I spend the big bucks for a plumber?