I got an email back from PPG today with 2 more mixing numbers.
I spoke with my local supplier. He has a new computer matching system called Prophet that he says he can take a sample the size of a business card and it will calculate a formula in about 30 seconds. I am going to look at the chips for the 3 mixing numbers I have and if they don't look right I am going to try the Prophet. The idea of having a formula to use again seems better to me than his first sugestion of bucket matching.
Will let everyone know the outcome.
Bill Gullatt