Just got a great looking Wizard WG-7, s/n 480733. Is it from year ’51, ’52, or ’53? What was the original prop like? Two blades or three? It now has a Michigan AM191, 7.5”x10 pitch brass prop w/out the usual clutch, just a shear pin. Broken old grip like on the KE-4, i.e. black, pointed end, 3 ribs on underside, long flutes on top. Was this the original grip? Thanks, Dave H