Front brake, loss of pressure

[alex]

All 4 should move evenly with pressure applied to the lever, now saying that, nothing is ever going to be perfect but they should be relatively similar, it will probably always bias one side over the other so don't get too anal about it.

This video is actually pretty good as it demo's what it should be like.
Baron and Benz pushing a piston in and out...

 

[Frank-RR]

That work, cheers Alex

 

[DrIoannis]

Hi guys, I have removed the rhs calliper to start cleaning I have noticed, it's only the rhs pistons coming out no movement on the left and the top right piston comes out at a different rate and not came out as far

any suggestion

Clean it, clean it and clean it...