New front struts on 99 OB, did I do something wrong?

I’m pulling to the left a little and I’m pretty sure both sides are making a knock noise when I go over potholes/bumps etc. I’ve driven on them for about 250+ miles now but I don’t know much about suspension yet, I heard they could need to be broken in but I have no idea what makes them “knock” I did also make sure to mark the top bolt at 12 o’clock position and tighten it back in the right place.