Front brakes brake harder once every wheel revolution when brakes are warm

A conversation I fear I will also be having sometime this week, as my recently fitted front discs seem to be as warped as the ones hey were replacing, after less than a thousand miles. Does anybody know where I can get quality EBC ones?
 
I did my first long trip today after fitting the EBC discs. There’s an occasional vibration under braking. Not every time though, so more investigation required before I blame anything.
 
I had an 0.011" runout on a rear disc, I marked its location, removed it, spent a long time cleaning the disc and output flange and re fitted it 180 degrees round. The runout reduced to 0.003".
I would certainly try this on front discs. It does not take much corrosion in between the disc and mounting to cause a problem.
Obviously if the disc has a high spot or metallurgy issue this wont help.
You don't have to send a fortune to get a piece of kit to help sort it.
https://www.amazon.co.uk/Indicator-...ocphy=1007127&hvtargid=pla-419506747622&psc=1
 
You don't have to send a fortune to get a piece of kit to help sort it.

Mine only juddered when hot, so by the time I got home, jacked the car up, removed the wheel and set up the gauge, it would have been ok again :confused:
 
My Discovery does that, and it's not the discs, a few sets of discs and pads, often together or just pads and it still has the one-per-rev judder.
 
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