I need a short term fix for my daughters huffy mtn. bike. I am getting her a Specialized Hardrock WSD for Christmas, but in the mean time she wants to keep riding some trails with me. I have tried everything I can think of to adjust these dang things to no avail. Can I swap them out with any sidepull type brakes, or is there a size difference depending on frames? I ride a Hardrock Sport and her brakes look the same as mine except mine actually work!!

Any help would be appreciated.

Justin