soo, a couple of weeks ago I went to ride, first time in a couple of months due to winter. Front brake was dead, pull and it goes all the way to the bar and nothing. After maybe 2 blocks some pumping it was fully back. Couple of days latter same thing, so I figured old fluid, got water sucked in and now air. Took to my local mechanic, he bled the system and all seemed well. Well, last weekend I went to ride and again the brake was gone. This time it would not come back. So today I took it back for a final try at bleeding. It again feels fine but I honestly doubt it will stay this way. He and I feel that either the master cyl. needs a rebuild or I have an issue with the ABS (although the rear is fine). Ideas? Any idea where I can get a cyl rebuild kit? I did not even manage to find it on the microfiche, and I really did look.