NO !!!
Bridport Foundry is Stuart Models and they invested heavily to get the often very small castings right, to avoid hard spots Etc. If there is a problem they will change them. If you buy old stock there will be no come back ! I bought a D10 set of machined castings from Henly, when finally built several years later the crank was WAY out of true. The NEW owners in Gurnseys attitude was "nothing to do with us" !!!!
My advice would be buy new, there is a guarantee ! Noel