On my honor, I will not alter this gun.
However
It is far too tight "as is" for quail. I've torn up a few already.
I will immediately load some spreaders and report on how they work out for me.
But regardless, I won't sell this 20 gauge. It feels to me, far "livelier"
than any of the 20 repros that I've owned or handled. I really enjoy shooting it.
My thanks to Dean Romig for his advise, and giving me the confidence to originally make the purchase.