Jean, you must have missed this discussion under John Morrison's blogs. He has been sent the entries which got lost during the changeover to the FHS, but preferred to add them separately (rather than to replace the whole file) and this would take a very long time. It is possible more have gone missing if all entries for a particular surname are not there. It was just certain parishes at some dates which were missing before.
- Or perhaps just broken links.

You could use:
www.iomfhs.im/lawsons/births/sayle.html
www.iomfhs.im/lawsons/births/crellin.html

Sue