I had a few posts, but to sum it up.
Changing ratios wont work for me, I dont have the torque to power the 2.28:1 ratio gears.
Also, I have a "new" manual about the Barton pumps, gives LOTS of tech data on it, maintaince, repairs, specs, tolerances, etc. It's a 3 meg file, PM with your email, and I'll send it to you. I got it from Hale, who bought out Godiva, who bought out Barton. Also, if you call Hale with your pump's serial #, they MAY be able to give you a date of manufacture, who bought it (fire apparatus manufacturer wise, ect. The guy told me records are sketchy, but he had info on my 2 pumps.