Today we checked the mass ballast available on the SR actuation cage (namely on F7 body as that is connected to the cage).
There is no problem at all to remove mass and recover the needed difference new baffle-present baffle = 1.3 kg and balance.
Then there is no need to open the upper part of the vessel to touch the superattenuator.
If the new baffle arrives at the site, the present one will be substituted on Friday.