Aftermarket triple clamps can be purchased for road bikes to allow this adjustment and remove the need to change ride heights instead.
Motorcycle triple clamp alignment.
The steering stem is one piece with the lower clamp.
You can not always trust the manufactures marks for the rear axel position 3.
Doing this will free up the front end even more.
So in addition to what you propose i would suggest you slack off the pinch bolt on the upper triple clamp securing it to the steering stem which holds the clamps in alignment or misalignment to allow it to rotate into alignment.
If the front end is still out of alignment then it s necessary to loosen the steering stem nut with a 32mm wrench.
My handlebars were slightly out of whack after my bike went over last week.
Support the front of the bike so that the bike will not slide up or down when you start working.
Tighten the lower triple clamp.
This will insure the rear wheel is perpendicular to the swing arm pivot.
The forks and triple clamp system is straight and true.
It s fairly easy to rectify though you just need to loosen the lower yokes and.
The height of the front of the motorcycle typically measured from one of the triple clamps and the height of the rear of the motorcycle.
On racing bikes the trail is usually adjusted with an adjustable triple clamp which changes the offset distance and can be adjusted in fine increments to fine tune the handling of the bike.
The motorcycle wheels are straight and true.
To realign your front end you need to remove the front fairing and then the handlebar risers from the triple clamps.
The first thing you should do is figure out if the handlebars themselves are bent before you start messing with the alignment.