I am in search of a set of nice, fully checkered walnut stocks/grips for a 1940 production Colt M1911A1 just prior to the switch to the Coltrock synthetic grips. From my gathering these are referred to as "28 row" stocks that have 28 rows of checkers between screw holes. So far all I have been able to locate are the 31 row commercial type stocks/grips. Any leads would be appreciated.