the interior black circle seems to line up well with the outer white donut so i think the secondary is fairly well aligned. i think the fact it is all off-centre means the primary needs tweaking?
i am in the same boat so dont take this advice too seriously
i have a similar crescent to you, between the big white outer donut and the interior black circle. i dont know what that relates to (less than 100% perfect secondary alignment?) or how much of a problem it is.