Your problem was the oil clearance between the rockers and the shaft, not the size of the line. With proper clearance on all the parts I can lubricate rocker arms with a 1 inch line- - - -as long as the rocker shafts aren't worn out.
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
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