I realize that there have been many posts about the lack of a generic reducing tee for copper pipe. I have made many piping models and as all of you well know, tees are created as standard tees then with reducers to change pipe sizes. After doing some research on other fittings, it appears that I must create my own parameters and look-up tables to create a simple reducing tee. Is this accurate or did I miss something? Any suggestion, solutions of content would be greatly appreciated.