This is a 3 Cylinder 2 Stroke, think of it as 3 separate Engines, with a Common Ignition System, and Block. Each Cylinder has it's own Crankcase, otherwise it would not run.
If a Reed Valve isn't functioning, Air-Fuel will just be inhaled and exhaled through the Carb.
If the lowest Cylinder is...
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It it the actual Fiberglass, or just the Sponge that is glued to the cowl. Also where, the side, or the top? It wouldn't rub for long as the Glass isn't very thick.
Another control box for a Johnson Hydro Electric Shift.
Well you can replace it with an Evinrude Push Button Control box for the Hydro-Electric Shift models.
Beware, in either Scenario, make sure it is not a Control Box for the Electric Shift motors, as they are not interchangeable
Just google Mastertech.ca. Maxrules is another site that has serial #s.
So you will be taking off one Jack Plate and replacing it with a different one...
Spraying the Fogging Oil into the Throttle Body, will allow it to coat everything, including sensors, and anything else upstream of the injectors, there is nothing that will/can wash it off. In Carbed Engines, Gasoline was everywhere, and would wash the Fogging Oil off.
In Canada, Lakes and Rivers are Federal Jurisdiction, so the rules apply nationwide, the Provinces, and Municipalities really can't do much, or make different rules.