the master cylinder on my hayes hfx mag blew on me. i am debating the repair vs. replace cost on this job. i have had the brake for almost three years and it has seen some crashes. i know it will be cheaper to go with the repair, but not by much as i see it. just wondering how others might see this. it looks like the build kit will be about $50 for all the parts i need. i will have the LBS do the work, so they are gonna charge me some labor. i am not sure how long the fluid in the brake lines lasts, and i have not done anything with it in 3 years. time for a change? that's gonna cost me. i am also due for a new set of pads. another $20. I am guessing that the total repair package will be about $100. i can get a new HFX Mag or HFX-9 for $150. Pre bled, pre cut, new stuff all the way around. this includes the new pads i need, and gives me a backup rotor to keep or sell/trade. will the new brakes need much setup? i have never bought a new pre-cut brake package, so i don't know how well they work out of the box. to me the $50 difference is not a big deal (not that i have a ton of money, but i can afford it). i suppose i could also buy a super nice pimped out off the hook rig like an el camino or avids. for the final piece of background, i need the new setup for my urban HT. i also have a bb7 that i could take an HFX-9, then put the new brake on the bb7. i swap wheelsets between the two bikes, so i want to make sure that there is compatibility with the rotors (i don't know if an avid rotor would cause problems with a hayes brake). thoughts?