One thing I can assure you of; "IF" I had an original Wright Flier I would not be modernizing it. I do have several Shotguns which are older than a Wright Flier & I prefer them Un-Modified as well. Its really immaterial to me whether lengthening the cone of one of my 100+ yr old Lefevers, even the lowly H grades, would improve its pattern or not.

Seems everybody wants to bore out the cones & bores on these old guns for "Better" patterns, then they turn around & open up those carefully bored original chokes because they pattern "Too Good"

Miller/TN
I Didn't Say Everything I Said, Yogi Berra