I've started fitting new fence posts and panels in my garden. I've tried to do everything by the book... post holes are dug 2 foot deep by about 10" diameter ive used apprx 1.5 bags of postcrete per post and left propped up with batons over night. The posts are standard 3" diameter 8ft long timber. with 6 ft high panels fitted. There seems to be an amount of wiggle at the top of the post after being left for a few days. and during some strong winds you can see the top of the post moving by about 2cm. The base of each post looks sound, no gaps between cement and post or cement and earth. Is this just a degree of flex in the timber post and is it anything to worry about? And is there anything i can do to improve this on the remaining posts i need to fit? Thanks in advance.