CGX mount parking not complete

Hello,
It’s only since a couple of months or so, that I dare to use the parking feature in SGP.
(fear of hitting my pier …). But I’m now using it standard.
What I observe is that , at end of sequence (mostly ended by time) , the mount is parked correctly or
quite often not completely in it’s final parking position.
It seems like the movement is stopped before reaching that final parking point.
So the problem is erratic …
I’m using CPWI as interface.
Thanks for any advise.
Piet