I'd like to install 2 fence posts butted up next to a path in my garden as shown in the picture. From what I've seen mostly when you install fence posts the post sits centrally in a hole with the post mix equally surrounding it. Is it ok to offset the post in the hole to say only 20mm away from the path? You're obviously only going to get a small amount of post mix between the post and the path and the remainder of the mix on the other 3 edges of the post?