20-05-14, 08:24 AM
Think changing the seals will sort the problem-use some red rubber grease (sparingly!) on new seals and outer part of pistons to aid fitting-will also help keep crap/moisture out. Have you ever overhauled the master cylinder? May be worth doing as you have changed brake hoses/overhauled calipers.Can get an "overhaul" kit from Yamaha or you can take a chance on pattern parts.