[notorious]

I'll have to look at the tag on it... I believe your correct with Gale and it was a 1931 now that I am really thinking about it. I know I went to an OMC dealer for parts, it took Lawn Boy ignition parts I recall, because the parts guy and I laughed about all the NOS parts he had even a set of rings and carb base gasket. I bought them all for penney's on the dollar to clean his stock. I bought the Goodyear 5hp and a Firestone 2.5hp for internal parts that some divers brought up from the bottom of Smith Lake in AL. in the seventy's for 25.00 and 10.00 respectfully. I used 25:1 or 32:1 fuel/oil mixture if I remember correctly. I perceive, I just leaned it out too much. It is somewhat different than your carb setup, as it seemed I had both a low and a high speed tune knob.
My buddy and I used that engine after I rebuilt it for about 10 years on a 12' flat-bottom I did everything I could to hot rod it chamfering all the ports and passages...he hated sitting in front, because every time I wrapped and pulled the rope it would pop him when it whipped back, I tried not to laugh, but seeing those welts on him was just too much. I remember one time he threatened to beat me with the paddle I was laughing so hard. The clutch spring on the drive shaft was broken when I took it apart so I JB Welded it solid therefore, when she fired she was wide open! There were a few times it just threw me right off the back when she took off and we looked like a bunch of clowns as I was swimming away from the boat as fast as I could while he was climbing over the seats to get to the motor while the boat was wildly swinging around in all directions with the torque of the motor running full throttle. If there were ever a time to have a camera that would have been it.
We would have people laughing at us all the time when we put in and came tooling around on that flat-bottom with the little motor, but for 10 years of use and just a handful of dollars we always had the last laugh, because that motor and the little 12 footer would absolutely fly across the water and those Tri-hull Rangers with 25's just couldn't keep up.. LOL