Sorry,cant advise on the juddering,really need to feel that type of issue.
I find just in general use on the road that rotors pick up road grease and thats partly the problem with them
Disc brake cleaner is a must and a new cloth each time[good quality kitchen roll doesnt disintegrate too badly]
Personal choice for the rotors is motorex[Switzerland] 750ml for £11.Big can lots of dosh but worth it in the long run for the amount you get over the smaller bottles.
To clean the pads i use a blowlamp to burn off the solvent and then a rub against a bit of wet and dry laid flat on a piece of glass.*
When using the heat,dont bring them up to cherry red,youre not trying to reforge them just burn off the solvent.You'll know as it will start smoking.
ALLOW TO COOL dont run them under the tap
* I hear horror stories about pad separating from backing from heating and cooling, but in the 10 years ive been using this method ive yet to have that problem.
Pads arent just stuck on,theyre mechanically bonded through the backing plate,thats what those holes are for
1976 Raleigh Chipper,1991 Muddy Fox Adventurer, 1992 Raleigh Diablo ,1992 Rudy Project, 1995 Cannondale M200 ,1997 Santa Cruz Tazmon ,1997 Specialized Stumpjumper ,1997 Specialized Rockhopper ,1997 Marin Quake 9.0,1998 Marin Pallisade trail ,1998 Raleigh Torus,1999 Orange Clockwork , 2005 Kona Hahanna , 2010 Orange Pure7
The Marvellous Mechanical Hope Collection