That line is simply an overflow tube to vent excess oil from the rocker shaft. Crimping it puts more oil to the rockers and less being dumped back into the crankcase. Leave it "as is" and be happy you've got enough oil flow to make it leak a little! Sometimes the feed pipe from the bottom of the engine gets clogged or restricted, and the rockers get starved for lubrication.
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!