Arthur,
I hear ya about overdraws. I’ve had a few hairy experiences too with an ol Golden Eagle Pro Predator, and those cheap fiberglass overdraws they used to make for them.
Now, I wanna know what kind of friggin wind you were shooting in that would cause an 1980’s era 31” aluminum to fly off your rest? It must have been a hurricane strength to get one of those logs up in the air!

.
And had you been shooting carbon with it’s much smaller diameter, less drag, and greater wind resistance that would have never happened!

Well, I don’t have any 3-71’s layin’ around these days (I sent ‘em to Frank), otherwise I’d send ya a few to try. I’ve got some raw shaft Blackhawk CAA 3-60’s that might be long enough for ya. They are not A/C/C’s but they aren’t too bad. I’ll go measure ‘em and see if they will work for ya. If so, I’ll send ‘em to ya just to try. I might also have an A/C/C 3-60 or two bare shafts laying around, though I’m not positive. I have all the components, you’ll just need to fletch em up, and install the inserts & G-nocks
I’ll PM ya this evening when I find out what I have.