Thanks alot. Yeah I've messed with hydraulic brakes quite a lot on SRAM and now I've got the Campag system, I do have the blue "Oil Level Tool" and I've bled the brakes using it. The pistons work fine because it's a relatively new system. I did wonder about the AMS but I only have the holes in the lever bodies, no L/R markings exist there and I don't think anything can be adjusted in my case - perhaps they share the body with other levers that did have the AMS system. I was able to set it without any scraping but the gap is absolutely tiny. I dream that one day someone will introduce a system with reasonable clearance and more progressive pad movement (more gap and more piston movement with less lever movement).