update:

I changed out the master cylinder/bled the brake lines fully.

AND....there's alot improvement in braking power and balance. I now dont have to go all the way to the floor when braking, and there's more power in braking. Thank God!

All in all, this process is very very easy!! I only paid $30 for the master cylinder(after a $23 refund for Core). The only seal you gotta deal with is the two seals for the brake lines that screw directly into the master cylinder, other than that its super easy!

I recommend flushing the lines if your fluid is really black, mine was!

All i used was a pint of honda brake fluid. Thats IT! I had bought 3 pints extra but i took those back.

Note: I do not recommend this to cars with ABS, because you have to bleed stuff a certain way(this is what the Haynes repair manual said). Take it to a mechanic!

Dave