Probe screen for WXGA monitor with 1366x768 dpi in linuxcnc 2.9

Hi,
I upgraded my machine from linuxcnc 2.8 to 2.9 and now I have a problem with probe_screen (from verser), because of my small monitor. Everything worked for 2.8, where I used probe icons for a 1024x768 screen. But the actual icons of the version for 2.9 do not include these, which leads to a gmoccapy gui that is larger as my monitor.
So my question is how to solve this:
Is there a way to reduce the whole probescreen with some commands?
Or does a reduction in icon size solve this? If so, to which size should they be reduced? I am not sure if I can use the old ones, have not tested yet, maybe that would be a third option, but it looks as if the one or other icon has been added.

Maybe you can modify the probe screen source to use CSS and then reduce the margins with CSS.
That's how I made Gmoccapy fit into the old sizes when migrating from Gtk 2 to Gtk 3...