Dave, thanks so much for the quick response, you are truly a professional. However, besides not being able to find a 3-blade 15x7, that SB 24x12, in either 2 blade, 3 blade, or 4 blade will be completely impossible to locate. Might you have any suggestions as to where to begin looking for either of those two pieces of lumber. Blue skies to you and yours my friend. Chic