I have an 08 Concours (Non ABS) and several months ago, I noticed that after the bike had been sitting for several weeks, the brake lever would nearly reach the grip before meeting any resistance. It had been several years since I had done a fluid change, so I did a change and fully bled the system per the procedure in the service manual. Problem solved; nice firm brakes again. After returning from a 3 week car trip, the first time I went to ride the bike, the brakes were soft again! I re-bled the master cylinder, and bubbles were expelled once again, but normal brake function was restored. 3 days later, I feel the lever getting soft again. Thinking about it, the fluid replacement procedure in the service manual doesn't expel any contaminated fluid from the calipers, since the bleed ports are at the top of the calipers. Could this be the problem? Do I need to completely expel the old fluid from the calipers then refill & bleed the system again? Or is there something else I'm missing? (No sign of fluid leaks anywhere.) Thanks in advance for any suggestions!