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I finally got around to completing my Ducktwin project. Finding a nice replacement Ducktwin tank with original paint and a good decal would be pretty difficult where I live. I have an extra Lightwin tank that would have worked, but I like original motors and it would have been difficult to paint the Lightwin tank to recreate a Ducktwin tank with patina.I used JB Tank Weld to seal up all of the pinholes (and larger holes) in the tank and two coats of Red Kote to seal the interior of the tank. After about four days of sitting with fuel in the tank, there are absolutely no leaks.
As for the rest of the motor, I cleaned off the years of grime, cleaned the carb, replaced the cork float that was shot, replaced the coils, cleaned and set the points, replaced the impeller, and changed the lower unit oil. Two pulls of the rope and it started and runs well. Just in time for duck season! I’ll take some photos later tonight.