I am using cat paint, best price and covers very well. I am not using there reducer, instead I am using napa reducer and hardner. This is working very well for me. As far as the red and grey thing, good luck. Two different suppliers I have given the federal number to said no dice. They had no info for it. The best I could do on the grey is to get a color chart and match for the 60 I have. The same with the red. If you call Milton Cat you could mayby get the red because cat does still paint some machines red on special order. This is not going to be a stock item. Make sure that you use a good primer under what ever you are shooting. I have done some restoration work on a steam tractor for the Collings Foundation with owns the B-17 and B-24 that fly around the country giving rides and the paint materials alone were $4000.00. I am shooting napa TRIO-Prime. Cost about $180 for two gallons when reduced. The mix ratio is 1:1 base to reducer. It is a very good etching primer to use over sandblasted material. Cat yellow goes over it very nicely. Word of advice to all, switch to using HVLP gravity paint guns, I did. There is alot less overspray and paint goes on better. The next project is and 1852 stationary steam engine for a museum coming in sometime in September.

Which NAPA hardener are you using and what ratio to the yellow, and which reducer and what ratio? Thanks, John