Originally Posted by Jethro in Va
intend on removing it just to see what old Ash Beville did to make it fit and not leak for 30 years.

That one's easy- - - -use a set of stepped-down alignment rings. I make them from aluminum electrical conduit. The only problem is that the 216 ports create a choke point, so the bigger manifold runners don't help.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!