First, it is highly unlikely that if you properly use the StyleRef Field that you need that many different headers. You do not need a section break to have the header reflect the contents of the current chapter. While there may be very good reasons for having 65 sections, chances are that changing the header is not one of them.

Second, it is relatively easy to have continuous page numbering. You have the numbering in each section continue from previous.

Header/Footer Settings Recap