well MJ , if we ever meet I owe you a pint ...or two
tried your disc clean methodology , up to 60mph and stand on the anchors ,unfortunately I live in the back of beyond and an ideal stretch of road isn't available but good enough I think
so measured the disc temperatures after each stop and got ..approximately , as follows
ambient 20C
then 40C , 60C ,90C ,100C , 110C , 130C, 160C , 200C ,200C
about the same both sides
don't know what would have been required to have them glowing but this wasn't it
result .....just a faint tremor now , perfect not , but perfectly acceptable to me