1. make feeds refresh (otherwise it seems cached);

in wp-content/themes/ready-review/functions.php, add at the end:

add_filter( ‘wp_feed_cache_transient_lifetime’, create_function(‘$a’, ‘return 1;’) ); //1 is timeout value

2. edit wp-includes/feed-rss2.php

Go to where it has the description tag and make changes accordingly.  Make sure in wp-admin -> settings -> reading -> For each article in a feed, show, you select full text.

Obviously change other fields there if you like.