Motorcycle Repair: front brake, honda xl125, model bike

Question
Thanks for the quick response. Youre right there are some great biking roads here and great scenery to go with them. I have not had any work done on the hoses and so i'll take it to my local dealer. If you dont mind me asking you another unrelated question, the rear suspension seems to sometimes sag when I sit on the bike and it feels like the seat height is dramatically lowered. Do you know what this could be? Thanks again.  
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Followup To
Question -
hi chris.
i'd really appreciate your help. I have a 2002 honda XL125 V Varadero and I live in Ireland. It has been serviced at the regular intervals in a dealer but I haven't owned the bike from new. I haven't had any problems until now.

First of all, the front brake lever felt very stiff when pulled i.e the lever would hardly go back at all and there was very little power from the brakes. It was diagnosed as a siezed piston which was fixed and i also had to replace the disc because it was warped(a pulsing was also felt, which is now gone). i am still having the same problem - (hardness when lever pulled/brakes lacking power), which seems to occur on and off. It gets especially bad after a long ride. My local mechanic cannot figure out what is wrong. He rode it himself and said it was fine but I'm not convinced. It feels like the pad is already stuck to the disc as I pull the lever in. He cleaned the piston again just to make sure and he says its not sticking. His only suggestion is to try changing the pads.

I'm sorry about the long message but I hope I have explained the problem well enough. Please e-mail me if you require further info: bren50c@yahoo.ie

Thank You,
Brendan.
Answer -
Hi Brendan.
 I wish that I had had the opportunity to visit the Emerald Isle while I was stationed, in England.  I understand that the roads and scenery are breathtaking.

 I am not familiar with the model bike that you have, but since brake systems all work the same, perhaps the problem is not in the disc or the caliper, but in the brake line.  Is it possible that there could be contamination in the line or a minor clog in the line.  When they worked on the caliper, did they flush the line and the caliper to remove any possible contamination or blockages?  If not, then that could be part or all of the problem.  The problem could also be in the master cylinder instead.  Drain it and clear it of any obstructions or contaminants.

Remember that if the brake fluid looks cloudy, then it is contaminated.  It should look clear with a light yellowish tint to it.

Good luck.
FALCON

Answer
Hi Brendan.
 On the suspension issue there are 3 possibilities;

1)  The preload is set too low.

2)  The shocks are worn out.  If, when you ride, you bunce more than once when you hit a bump, then that is the case.

3)  You are a bigger man than the original shocks were meant for.

There isn't too much else that it could be.

Good luck and safe riding.
FALCON