Do you do any fly-specific drills? i.e. - one-arm - or just kick? I'm a masters swimmer who does the 200 & 400 IM & what I find the best practice for the fly is: kicking with fins to get the proper rhythm - also - go to USMS.org and look up 'training' they have lots of good information. Jane Katz has a book for beginning swimming with good illustrations also (I'd give you the name, but can't remember it).