After the work of PR3 (klog19291), I chcked the GreenX alignment to X-end.
GreenX can be observed at X-end when PR3 OpLevs are (P,Y) = (-95.4,78.0) now (fig1, I closed a shutter at -17s).
These values are very close to the values (less than 10 urad for both P and Y) before PR2 troubles (klog19083).