I know this post is old, but if anyone else needs a fix, here's the one I found and use:
1. Open the mod in FO4edit.
2. Right click the mod in the left pane and select "check for errors".
3. When the face morph errors show up in the message window to the right, Ctrl+double click the formid.
4. Find another record of similar type (if a child has face morph errors, find another child that doesn't have errors) and Ctrl+single click it in the left pane to compare the two.
5. Scroll to the face morphs and adjust the errors. In my graphic, you can see that 000186b0 is supposed to be eyes, but eyes are 36ef34bf for this record.
What I like to do is pull up 2 fo4edit windows so I can Ctrl+c/Ctrl+v the records faster.
Let me know if anyone has a faster way...