persimmon loves to twist after split as well. I have cut a buuunnnnchhh. also peel the bark off fast b\c the borers love it, just about like any fruit wood. reseal the back and ends. if you peel it very gently and dont scrape the wood at all, as it cures the back with turn a very uniform black color, which if you leave alone will stay but its only paper thin, and if you nick the back you will see the the nick, you dont have to worry about it unless you reeaaallly like that natural black color on the back..... i always seal mine with paraffin wax, the wax may be what brings out the colorr...im not sure