No one's chiming in.., & I don't have a later model rig but I would ask, did the new M/C come with a new switch..? Did you TEST the old (and/or) new switch.?
If it's the orig. switch.., it may be stuck.
Is the pushrod fr. pedal to M/C orig. stock.?
Assume no power brakes...
Any pics of M/C & pushrod..??
Front brakes do req. more braking overall to keep the rears from skidding as weight moves forward.