Reply to korg nanokontrol mod help

hey guys!

i need some help with my nanokontrol: i took off the original components from the pcb and replaced the faders by 100mm alps fader (also 10k like the 60mm originals). but now the fader is reacting different, it gives 100% after moving the fader only about one third... is there something wrong? a longer fader should give the same values, or??

best