Its not a braking issue.. Its just that the brakes are a bit weak for such a heavy car.. A simple upgrade of the servo to a double layer servo and better brake pads can solve the problem mostly.
Mine also the same stuffs. Cos my car was under warranty, they just replaced it for me. They just bend the clips slightly in to let it touch more area. Saw my cousin bro doing for his wira before and it doesnt seem that hard. But if its spoilt u will have to replace it then.

One of key reason of brake not work so well for B and M line is the brake bump. B and M is using the brake bump used in 1.3 saga that provide insufficient braking power for 1.2 tons 1.6 liter PE.

H-Line is using brake pump used in Gen 2 or is it Satria Neo....not sure...but its a brake pump MEANT for 1.6 liter car like PE, thus H-Line has sufficient braking power coupled with ABS that makes braking distance ok even for stock brake pad.

Sorry for interupt.. may i ask, did proton not to sell persona elegance h-line anymore? my pe h-line total lost in accident and i made a huge mistake buy a rubbish car myvi se1.5. all i know that proton didnt sell pe h-line anymore.. i miss my most confortable car...