[CBRBob]

The resivour cannot be totally sealed, otherwise when you take the caliper off, the pads push back, the fluid goes up and when you try and draw it back into the m/c, it will create a vacum when you try and pump the brakes. The screw you have in there needs to let air in. Those hoses some people use are not a great idea as a res. If you are using one, it should be 8 inches long and only half filled when the brakes are good.