Find an expandable rubber freeze plug that is a snug fit in the M/C fill hole and drill the center bolt for a small hose nipple that can be pressed and/or silver soldered in. Attach your remote reservoir hose to the nipple.
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!