About the PM, I still have several PM's I've sent that are unread when I know they have read and replied, no names here(cough..Bnoon,cough cough). Just the way it goes, Terry is usually pretty busy coming up with great new gadgets for us contour owners so we can't complain. About the head swap, I am almost POSITIVE it will be the cure to your power woes, just make sure you do a thorough inspection of all components and for God sake use new Head bolts!!
