We'll create fresh WordPress site with Full Text Feed installed. You have 20 minutes to test the plugin after that site we'll be deleted.
WordPress 2.1 introduces a nasty “feature” to feeds. Instead of abiding by your feed preferences, WordPress will truncate your feed’s content anywhere you insert a <!–more–> tag. Full Text Feed undos this functionality, allowing your feeds to contain the full text regardless of <!–more–> usage.