That is a really nice one and cool that is has your family heritage attached to it…
The cloud white usually didn’t hold up well on those. Meguiar’s cleaner wax will make it look really nice. Wash it with blue Dawn first
Did the coils have a yellow epoxy securing them to laminate cores? If so, they have a near 100% failure rate by now and I would be shocked they are still working. Most failed within warranty and have long been replaced with the better ones that did not use the yellow epoxy.
I have had 5 of 63’s and still have the nicest one I came across.
If you want the motor to run well at trolling and idle you may need to get into crank seals and resealing crankcase with loctite 518. The top crank seal can be done by removing top crank bearing carrier, the bottom takes 2 seals stacked and the requires splitting crankcase. Of course give it a try before you get into all that and see if it runs desirably.
I had one motor that mud dabbers made a nest in the idle muffler found under the u shaped plate in the rear of pan and clogged it up. Motor would not idle after all that work I described above until I cleared it. The function of this chamber is to muffle the exhaust at idle and provide back pressure relief at idle and trolling since engine is deep in water.
That telltale will always be an issue. Its design allows it to clog easily. As Dave mentions there is a plug on top of engine near exhaust plate on later motors and even later models ran telltale form this port. Unfortunately your 63 likely doesn’t have the plug or boss to tap into. You’d have to get location from a later model and tapping would be risky as metal is thin in that area.
