10th Jul 2016, 23:37
The brake pistons are probably a little old and rusty; I would have them pulled out and rebuilt or polished. You can do the job yourself if you are a little handy; there's all kinds of videos online.
Also old rubber lines have a tendency to expand. You might want to replace them with stainless steel.
Well that's my two cents, hope it helps you.
20th Nov 2014, 02:06
Had a serious problem that required frequent stops to bleed brakes because they just seized up almost daily. Got the bike with 9500 miles on it in 2012. Put new seals in it, bled rust from lines from sitting, reservoir seal, polished piston with 1600 grit emery cloth to remove minor pitting with no luck. Final solution was to remove and thoroughly clean out equalizer valve right behind Honda emblem below headlight. Bled one more time and no problems since. Use alcohol to break down and free rust. Hope this helps.