Have you tried the Parish Record transcription Society?
They have a CD for Harting you can buy, or you can search their database for free and pay for the complete record (although it seems to be down at the moment, so I couldn't look for you):
http://www.prtsoc.org.uk/index.php
UPDATE: Just got in and there are lots of BMDS for Greentrees in Harting from 1560ish onwards ....