are you using a center hold with AP? That is not a good idea. I don't know of anyone who does that.
Try aiming below the black. How much below is a personal preference, I haven't shot AP for a while but with my .22 Pardini
I have a small stripe of white between the top of front sight and the black center. Some like to have the front sight touching the
bottom of the black, but you will soon find what works for you. I would recommend having about equal amounts of light on the sides and top of front sight as a good starting point. Having the front sight on a white background will show flinching and incorrect sight picture much better than a black background. Easier to shoot in less than optimal lighting conditions too. Try it, it may feel weird at first if you have always used a center hold but there are many benefits to 6-o'clock hold.
Yes, I am using a center hold. I'll try adjusting the rear sight to a 6 O'clock then and see if that helps. I've also just recently gone to dedicated shooting glasses that are tailored to the distance from my eye to the front sight. This was a huge help in bringing my sight picture into crisp focus on the pistol side and not letting focus wander to the target at all causing long delays in my shot. The glasses brought my average 10-shot target from the low 80's to the high 80's pretty consistently. Still not as good as my standard pistol scores, but I'm working on it.
Thanks for the suggestion.