Okay...so just an FYI for anybody else with these Brembo RCS clutch master cylinders.
Not quite sure why they need to be sent back to Italy for rebuild. They actually come apart very easy and there's only a few parts to the piston and 2 small rubber wipes attached to it. If you had the parts these things would be a snapto rebuild. I wonder how different the parts are from the normal Brembo radial master cylinder...I lay money there isn't much difference as long as the bore size is the same.
But I digress....
So if you ever have the problem I mentioned do this...
1.) Loosen the screws securing the master cylinder to your handle bar and turn the master cylinder on the bar so that the piston that is pushed in when you squeeze the lever is pointing straight up. then retighten the master cylinder to the bar.
2.) Remove the clutch lever from the master cylinder. (1 bolt and nut)
3.) Pull the little protruding rod out from the rubber seal, there is nothing holding it in, it's not attached to anything.
4.) Use a very small flat head screwdriver and pry the rubber seal off from the edges.
5.) Using a pair of snap ring pliers grab the snap ring and remove and the washer behind it.
6.) Now what's left is the actual piston mechanism. Just pull it out but becareful theres a long skinny spring that it fits over...it could come out too when you pull it off...if not don't worry about it, it can stay in.
(This was my problem)
7.) Wipe any debris or dirt off of the piston and it's wipes and inspect for damage.
8.) If no damage, reinstall everything in reverse order.
(Note if you need to remover everything, the only other part is that long skinny spring, but when you go to put it back in it just doesn't sit in there, there is actually a little rod that sticks out at the bottom and the spring fits over it.)
So...my problem solved... dirt got in there somehow and was causing the wipe to not seal correctly.