DZ said:
Chas, did you have to reshape the plug to fit the shen or did it slide right in ?
Ah, an opportunity to boast of one of my finer luthier-like moments

:
I remove the old pin and plug, stick the plug in my coat pocket and am off to visit my wonderful friends at St. Louis Strings, a long-distance off-shoot of KC. They typically have a decent stock of those pins.
So, the young lad at the shop (Michael, the proprietor, is not in) seems to understand my request. I produce the plug and he goes about measuring the taper (it's correct) and the diameter with his fancy engineer doohickey. Young lad then rummages through the box of plugs and selects one that he deems to be of the same variety. I select a pin length, he slaps on the rubber megafoot and off I go.
Get home, and there she is -the Mistress on the bed - stripped down and ready for me to insert my . . .uhh? . . . oh! . . . endpin plug.
It no go!!! It's too fat. It's probably 3/8" or so from seating. So, following a brief cursing episode, I begin to wonder how I am going to remedy this, as I have no endpin plug hole cutter, nor do I wish to lug the Mistress back down to the shop in her semi-naked state. Then it hits me. An idea!!!!
I head out to my back shop, slip the pin in the plug, snug it down and proceed to insert the pin shaft into the chuck of my drillpress. A few seconds later, I have the plug spinning at a few hundred RPM. A little 100 grit on on a piece of 2x stock and I am able to take enough material off the plug in just a couple of minutes to make it fit snuggly as a buggly.
There was a few stops for trial, but it was easy. I was so proud. My idea actually worked. That's so rare.