Following on from a quote from yesterday saying "you shouldn't have to knock in a GM" (a claim GM themself make!) I feel a that bit more knocking can never hurt, as I've found the edges always need rounding on a "ready to play" GM.
As I was knocking the toe and edges anyway (you can never over prepare a bats weak spot), I thought why do things by half, so the middle got a bash too! (As I've said, to my mind can't over prepare a weak spot, so you can't over prepare the middle either!)
An hour of knocking later, (and bear in mind this was the start of the process, so what I'd call light knocking in) I had some nicely rounded edges and a dented face!
Are GM bats really "ready to play"? You tell me!