Thanks.

The problem with my cantelevers is with the springs I think. When we got the bike there were these grey plastic coverings over the springs. Well, one of the plastic pieces on the front brake came off. And from then on the front brakes started to lean to the left (when looking straight at the bike, also the side the plastic piece broke off) and didn't work anymore. When I looked closer at the brakes to see why they weren't working, I found the the plastic pieces have little screws that adjust the spring tension(I think).Is this possibly why my brakes are messed up?