Need help correcting strange manuscript formatting problem

Im having a problem with the formatting of a few pages of a 230 page manuscript that is best illustrated in the two images below

There are about 3 or 4 pages whose dimensions are significantly larger than others.

I have not been able to correct this formatting problem. Can someone please tell me how to correct this
Thanks for your help!

There is a change in page style, but to understand what’s causing it we need to look at the actual document. Please, upload it so we can see what’s going on.

  1. Read this tutorial (and this one might be helpful too).
  2. If you can’t find an answer, read these guidelines and ask a good question.

Thank you for your response
I would like send you the two different page styles for your analysis but am a loss as to how would I upload a single page from a 230 page manuscript?

@provlima just save a copy of the file and cut the content before and after the anomalous point to let a few pages showing the problem, then edit your question and attach the resulting file.