I horizontally swept the translation of the incident beam in order to investigate a possible clipping in Power-recycled Michelson (PRMI).
The recycling gain of PRMI depended on the beam pointing but it did't improve the recycling gain.
I guess the amount of the entire shift I introduced was about +/- the beam diameter = +/- 5 mm or so.
Within the range of about +/- 5mm in the horizontal beam translation I didn't find any obvious sign of a clipping.
Here shows the measured recycling gain and the power reflectivity of PRMI as a function of the beam pointing.