I read everything folks wrote, found the thread on the UK board (old dogs and tricks), read a bunch and watch the DVD a couple of times very carefully.
So today a really concentrated on form and kept my stroke rate below 22 SPM. So in 60 mins I did 13692 meters@ an average pace of 2:11.8 and 153 watts. And boy did it kick my butt. Managed to keep my heart rate in the 145 range. Reminded me of marathon training.
So thanks to everyone for all the advice and tips.