I have a naked 1995 k75 approx. 30,000 miles. I had an all inclusive check done around 28,000 at a reputable shop. They checked to rear brakes and I was told that the bike had to have been dropped and that caused air to come into the brake line. They bled the brakes and they operated normally. The bike has not been dropped then and now but the trouble persist. I see no leak on the floor of the shed and it has plenty of fluid. Anyone have an idea of what my next course of action should be. Rebleed the rear brake again?