Could also be the brake lines need replaced and/or the master cylinder needs cleaned.
On the good side with this issue, it gives you some good bargaining power to get the price reduced if you are willing to do or have some one do the work to correct it.
One thing to be sure to ask the present owner is, if he knows when, or if, the splines have been lubed and how the charging system is working.
AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC
"When life throws you curves,
Aim for the apex."