JC,
I did, but the strike plate and rest on my longbow are one piece....and extends below the grip leather. It was a heck of a lot easier to drop point weight and add a weight tube than strip the leather and start over.
I would up with a 550 grain arrow for a 56# bow, which suits me just fine. Just wasn't what I expected is all.
One of these days I will figure out what it is about my form that requires so much spine. I'm always a good 15-20 pounds over what most folks use. Hard to argue with bareshafting results, though.