Brakes 101--or troubleshooting your brakes

[FROSTY:Me]

WARNING --THIS IS POSSIBLY THE MOST VITAL COMPONENT ON YA BIKE
IF YOU ARENT CERTAIN OF WHAT YOU ARE DOING -DONT TOUCH UNLESS SUPERVISED.
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guys n gals--this seems to be a common and repeated issue so Im going to make this thread a sticky
Please can we have brake rebuilding advise from experienced repairers --Ill cut and paste it into a single post

Front brakes shuddering
1) remove the pads --Get a sheet of Glass and lay a sheet of 600 grit wet and dry sandpaper and put it on the glass--add water and hold the pad flat on it--sand the pad surface flat.Hose off the residue.--Do it for all 4 pads.

2) remove your brake pistons and get them back to a mirror finish Buy a tube of rubberlube- No need for a tub just the toothpaste tube sized tube will be fine. --Pump the pistons back out and get rubberlube on them and onto the seals Be generous but once youve pumped the piston in and out a few times wipe off the excess.
3) remove all the pad mounting pins and sliders. sand them smooth and use a little bit of rubberlube to let the pads etc slide freely. if they are worn--replace them
3) Put a big easy out into each of the full floater "rivets' And spin it up not enough to make it rattle but enough to get it spinning.
4) clean out all the holes and slots in the disks.
5) Check the wheel and steering head bearings are correctly tensioned and are in good nick.