Does anybody know what the issue may be if sometimes I can feel some grinding in the brake pedal when coming to stop?
It is not coming from the pedal itself but I can feel it there as the brakes engage.
Its normal for the first few stops to feel a grind especially after rains as the brakes remove all the crud and rust built up on the rotor. If you feel grind after that I would check you pads and make sure theres something there. I would see if your rotors have grooves which indicates something is trapped between the pad and the rotor which could also cause grinding.
Correct me if I'm wrong but these 70s alfas have brake pedals that act as levers up to the brake booster. Not cables. I would check the pivot points for the pedal. Does the grinding happen when you press the brakes to slow down or does it happen even at a stand still?