Thanks for the update Julia, your remedy now could be ours in the future.
It makes one realise, and not for the first time, how easy disc brakes are to service.
Whilst reading through the posts again, I had a thought about brake fluid too. If it hasn't been changed throughout the system in the last 2-3 years, there could be some moisture mixed in with the fluid, and this would cause the pistons to rust slightly in their bores. Even if you remedy the existing problem it is also worth changing the fluid throughout the system. It's easy enough to do, just a wee bit messy, and you shouldn't even need to bleed the brakes, per se to get air out.
If you need to know how to do it, just post up, as I don't want to be accused of teaching egg sucking. :xmaswow:
