The thing that is causing the behaviour you see is the view settings in the FILE, but this can be changed to some degree while creating the file
Click the options button and then go to the initial view tab and play round with the options available (which are a limited subset of what is actually possible)
For more advanced control, or if these files are sent to you from other places, this can be done after the file is created using something like ScriptMaster with iText - easy.
Excellent! I hadn't thought to investigate options at this end of the process; just tried it and it appears to resolve the problem, at least for PDFs created from FM, which most of mine are. Many thanks.