Andy: Sounds like you may be doing too much (which may be hard to believe, I know), but try cutting back to 1 on, 2 off for a 1 to 2 weeks once you get your morning wood back -- then gradually increase from there until your PIs go negative.
You may also want to have a look at this thread:
http://www.pegym.com/forums/general-...explained.html
Hope this helps!