Even if you just adjust the bars without adding bar backs or lifts it can cause alignment problems. I have bar lifts and have rotated the bars away from the tank. In order to get everything to align I had to extend the dash pad mounting brackets by 20mm, once done everything aligns. I would undo the dash pad mounting bolts and while still keeping the outer pad aligned with the bars rotate back until everything realigns Once everything lines up see how much you have to extend and /or bend to the dash pad mounts.
Regards Martin.