Where did you get the 172p ?, we have had same screen size problem with 172P. Try this from
https://github.com/c172p-team/c172p-detailed and report if works, please.
We had same problem with 757-200. If I recall correctly we solve it on this fashion.
Navigate to your FG/data/aircraft place. Open 757-200/System file instrumentation.xml with a code/text editor go to the code line 152
You'll find
<!-- Use this to open a commentary tag warping around this code, where there are radar and navigation-display, we opt to comment both, but you can try commenting each one
<radar>
<name>wxradar</name>
<number>0</number>
</radar>
<navigation-display>
<name>nd</name>
<number>0</number>
<symbols include="nav-display.xml"/>
</navigation-display>
--> Close the comment tag, so the code within those tags will be not executed.
Save file, open FG with 757 and try out.
- Code: Select all
<!--
<radar>
<name>wxradar</name>
<number>0</number>
</radar>
<navigation-display>
<name>nd</name>
<number>0</number>
<symbols include="nav-display.xml"/>
</navigation-display>
-->