LA 360 high idle

Back up the bus a sec:
Did you say that you put your gloved hand over the carb air-horn until the revs came down far enough and then when you removed your gloved hand, that she idled at a normal speed?

If yes, I think there might be an easy fix in there.

Nope
Gloved hand on carb it brought down rpms.
Almost stalled/choked the engine and gradually released hand off carb then right back to high rpms.

High rpms isn't much of the problem now
I think that had to do with a bad seal on the intake so i reinstalled the intake
Got the rpms to come down to normal
Adjusted the fast idle screws and all to make it purr at idle
But now she is leaking in the driver's side rear water port. Uggghhh
So fix one thing another thing breaks

But what would have been your suggestion?