Lining up front end

Evening all,
I’m after a little advice on the best way to line up the front end, I have re- tightened the headset bearings as I had a little bit of play, I also have the front mudguard off as was checking for any cable interference as it feels a little tight at the end of one direction of fork travel. Can anyone give me any tips on the best way to make sure everything is straight before I tighten the headset clamp fully. I did mark it on removal but to be honest I have suspected it wasn’t 100% in line from the last time it was off. Any help gratefully recurved.
Matt
I’m after a little advice on the best way to line up the front end, I have re- tightened the headset bearings as I had a little bit of play, I also have the front mudguard off as was checking for any cable interference as it feels a little tight at the end of one direction of fork travel. Can anyone give me any tips on the best way to make sure everything is straight before I tighten the headset clamp fully. I did mark it on removal but to be honest I have suspected it wasn’t 100% in line from the last time it was off. Any help gratefully recurved.
Matt