I'm not in the area and it may be hard to find many. Only about 700 were made, how many are still sailing. But, I have had mine for 30 years (and raced on it several years before). I have the original owner's manual and a lot of the newsletters from the 80's and 90's and things written by Arvel Gentry (who was the R23 guru!).
If you want me to try to find any answer, just PM me. I only occasionally actually log in so be patient.