to align the hoods you can get a special tool but even with the hoods aligned the brush kicks sidways in the hood
so it dosent sit strait.
i dont align the hoods as such i align the brushes by kinking the hoods so the brush sits and wears strait.
you need to do it with the same size brush you are going to use
as diferent size brushes kink different.
i get the brush and color it with a permanent marker
put it in then run the motor out of the car then check wear the marker has worn of.
if not rite in the center of the brush then i kink the hood and repeat the prosess untill the were mark is in the center.
alfter that i bed the brushes in then true the com.
get perfect alignment that way..
it works for me but others may have a different way