I recently purchased a 1973 911S and am now trying to sort the car out. This is the first 911 I've owned so I'm not 100% familiar with them and their systems. Is there a proportioning valve in the brake system like there is in the 914s? I'm trying to figure out why the car locks the rear brakes before the fronts. I bled the system tonight, and other than some old fluid didn't find anything unusual. All rotors and pads are in good shape. The system is capable of locking all four wheels but it consistently starts with the rear tires.

Is this typical for the 911s? Seems backwards of what is desirable to get the car to perform. Especially with the tendenacy to bring the back end around in a corner. I don't need something else working against me.