Re: my second build!
I honestly dont know exactly what is wrong with the brakes on that bike, I just know they are terrible. Rim brakes (the type where the rubbr pads rub the rims to stop you) are not the best setup for a motorbike to begin with. if you are going to go with rim brakes, I recommend v-brakes at the least. These are the type where the brake arms are welded to the side of the fork, rather than bolted to the fork crown. I hope you can understand what I mean by this. Other options for brakes are disc or drum. All of the setups I have described would require a different front fork. I recommend just getting a different bike with a better type of brakes.