I hear you, and I appreciate your compliment. Tonight I was gently filing down some of the rough spots thinking just that about how much better smooth would feel. The length on the short start nubbin is longer than the short stub on my "regular" short starter, and it is shorter than the long rod on it. It will take some use to see just how it works and doesn't. I will report back, I promiseGreat idea, looks like you found just the right piece to do it with too,
If anything, I'd take down a bit more of the button for the "short start" usage.
Keeping the button on is appealing to the eye for beholders in some applications, but sometimes not so much useful for the user.
Most of them olde hand tools are "smooth" so they don't hurt the hand,,