[Tinker]

Try to find as many specs on your brake setup that you have now. Again, caliper piston area, master cylinder bore size, pedal ratio. You need to know where you are at before you can make a move. Do you have a vacuum gauge that you can check actual engine vacuum at idle? There are also pressure gauges available that screw into the caliper bleeder holes for checking actual brake line pressure. All these things are very important to the diagnosis.