A scrutiny panel's report is a summary of their findings and recommendations.
You may wish to discuss with senior managers the findings in your report and ascertain which of the recommendations are deliverable. In some instances, your recommendations may not be realistic due to operational functions and structures. If senior management is asking you to remove a recommendation, be sure that you are confident that the reason behind it is valid and not simply because the idea is not liked.
With regard to formatting I would suggest that you find out what the preferred format for board reports is and ensure that your report is formatted in the agreed way. Board papers are often presented in a uniform way as it is easier for the board to read and digest especially when there are a lot of papers for discussion.
Do you need to a report or could you do a presentation straight to the board?
I would also suggest that once the report has been to the board and either approved or commented on that it is published even in summary form. Publishing your reports not only helps the wider tenant population see that you as a group are open to scrutiny, its a great way to encourage people to get involved especially if they can see that the work you are doing is having an impact. You might want to consider publishing your findings alongside comments from the board and the senior managers, highlighting which recommendations are to implemented.
I suggest that you speak to your senior managers in the first instance about why they feel that the report needs rewriting. Do you have a mentor? They may be able to help you in preparing your report or working with senior managers.
Hope that helps