Members with 4 wheel disc systems: Can you lock your wheels?
The brakes actually work fine and feel good. I may be reaching for an unattainable level that isn't there.
There is a vacuum pump and tank to provide vacuum. The car starts and builds vacuum, then I drive it normally. The fat cam produces insufficient vacuum, hence the need for the pump.
I found that during repeated hard stops, the brakes were using up the vacuum faster than the pump could provide it. The pedal got hard to push and the effort was high. The addition of the tank helped with that.
Over time, I made several small changes to improve matters. Some changes resulted in small improvements that when added together, have resulted in better performance than I had with the previous 11.75 Cordoba front brakes.
The idea of different "EBC" brand pads is a good one. I have tried different pads on cars and trucks that made a dramatic difference over other brands.
Dr Diff sells quality stuff but for the past couple of years, he has been impossible to speak with. Every transaction is through email. Maybe he is short staffed and is doing the best that he can. I recall years ago, I'd call and he would chat for far longer than I expected, to the point where I wondered how he could earn a living by spending so much time on the phone.