the 470 doesn't do well if the temp got over 190. the aluminum open deck expands so much faster than the iron head leading to compromised head gaskets
based on the pic, it doesnt look like the 4" updated heat exchanger. you may want to look into that. the 4" will keep the motor cool for a...
does it instantly drop? or slowly drop? what is it after an hour?
are you turning the shafts as you are testing?
if it slowly drops to the 11 or 12 overnight, thats fine. if it drops to zero, you sill have a seal leak.
you should be pulling your drive every year to inspect the bellows, u-joints and the gimbal, and checking alignment
two choices on the hole. original size is 3/8-16 tap. can jump up to an M10 plug, or run a helicoil.
you can do the repair in-situ if you use the grease trick on the tap, then...
one is a divergent spacer for a square bore carb. small holes at carb transitioning to the big oval holes on the manifold.
the other is a conversion spacer for the spread bore to square bore.
Not sure you need both
are you talking the cables back by the ESA? or where the cable enters the control binnacle?
what do you mean the cables are backwards?
also, most likely your ESA is out of adjustment.
go here. http://sterndrive.info/ and watch the videos on setting up the ESA
If you are putting metal flake over another color, you need as little orange peel as possible. which usually requires sanding it flat so the flake lays correctly. especially if you havent worked with gel often.
Gel is finicky, and sprays like a high-build primer....and with the duratec, you...
