Thanks.
Noticed this morning they were very squeally (spelling?) after a few miles. Not just the odd small squeak, but very loud.
Have now fitted the rubber shims and applied copper-slip to the back. Will see how they are tomorrow, and I'll check the pedal feel as well.
On this morning's test drive, I managed to get one of the fronts locking up - which was very rare with the standard pads.
Richy