Yes, I may be pulling the levers too hard. The thing is that I don't ride enough XC to get used to the brakes because all of the road riding I do, so I thought it might be good for me to just switch back to what I'm comfortable with. Since I've had the disc brakes, I've been more frustrated with riding. Plus, they squeal and rub frequently which is also very annoying. I hate having to adjust them because it's a little more abstract compared to v-brakes.

Yes the fork and rear seat stays have mounts. It's frustrating that they put wheels on the bike that are only disc wheels! Ah well, the ones I got from ebay are compatible with both, so I will have more options with them in the future.

I am thinking about picking up some Avid Single Digit 7 calipers. I am hoping to find a new or almost new pair on ebay for cheap. I would rather not pay $30 per caliper. I have some websites and books for guidance. I also have a friend who knows how to do it, so if I can't figure it out, I can always offer him good beer in exchange for helping me.