Here is the RCPRO warbird schedule for 2013.
The Phoenix dates are tentative.

• February 9th: RCPRO Warbird, Tucson, AZ
• March 23th RCPRO Warbird Chino Valley, AZ
• April 20th RCPRO Warbird Hesperia, CA
• May 18th: RCPRO Warbird Race St. George, Utah
• August 24th: RCPRO Warbird Race Chino Valley, AZ
• September 21st: RCPRO Warbird Hesperia, CA
• October 19th: RCPRO Warbird Phoenix, AZ
• December 7th: RCPRO Warbird, Tucson, AZ