Q about centering pin on front air struts
 

I had to remove the front left air strut to fix something and wondering if now I need a full alignment done?

I used the 4th bolt/pin to align it back up, I mean with air struts it can only fit one way due to the air supply line.

How out of whack is my alignment now? Test driving it still felt straight and did not notice any pulls.

The strut to spindle/hub bolts didn't seem to have any adjustments either.

I wouldn't worry aboutt it because, as you say, there's no adjustment with that pin in place and very little with it removed. It would only affect caster and camber a minute amount. Toe would not be affected, and toe is what can wear tires when off even a little.

The shock tower was little slotted for the 3 holes but again like I said, the center pin doesn't allow any adjustment maybe like 1mm here and there.

And, that won't translate into anything down at the wheel. TIS says caster is not adjustable, and a small camber adjustment can be made by removing that pin. It also says an alignment is only necessary if removing/installing front spring strut WITHOUT centering pin. I think you're GTG.