I am using /5 lever perches with an under tank master cylinder on my /7. So I bought the front brake cable for an early R90/6 that used this setup. The part number ends with "400". In fact, I've bought two of them. Its installed correctly in the brake lever. The only way I can get it to be close to the right length is to take the adjuster nut off, and even then, the correct clearance isnt maintained where the tool slips over the master cylinder piston. Has anyone ran into this problem? According to the parts book, everything is the same with regards to adjuster, the rod that goes from the master cylinder piston to the master cylinder lever, etc.