Thanks so much, Jackie, I will try your suggestions. The CSS used is the same CSS I have been using during my Calibre conversions, and it is working fine there. Perhaps Calibre was also doing something else behind the scenes. The margin-top value seems to work just fine to put a margin at the top of each page, not the first paragraph of a chapter. My hope was that I wouldn't have to do Calibre conversions any more!
>>Finally, please note that the latest version of PRS+ has introduced some extra options for adjusting font-size, page margins, line-height, etc directly from the Sony. But, IMHO, it does require a bit more experience with css style manipulation to get it to work satisfactorily. <<
I just installed PRS+ a week ago, and I don't see these options. Where do I find them or is in the beta version? I installed the newest, non-beta version (as far as I know).