Truth is I could both make and fit a brand new arbor from tool steel if I wanted just as I have the wedge and trigger but it would be a lot of unnecessary work most likely. This experiment has been an itch I've been wanted to scratch any way for some time. I just thought it would be fun to find out about the supposed short arbor deficit ( if I can) and bring the rest of you folks that may have interest along for the ride.
Well oddly enough, that "supposed " short arbor has been known about for a long time along with the problems it brings and the "fix" has proven to be the cure whether any one person agrees or doesn't.
Fact is, the open tops that I own started off with destructive behaviors and since the "fix", there hasn't been an issue whatsoever. Basically, your "experiment " has been observed in reverse by thousands of folks. So, you're a little late to the parry.