Sorry you didnt get the result you wanted.
When I got my derv didnt know much about the car or engine, I was hopeing it was a common rail BMW lump. As i thought it would be great for tuning, etc.
Soon found out it was the L series, still its goes OK now.
I dont have a clue on the derv, thats why I've been following your project so closely and thanks for posting up the good and bad points.
My one does smoke a bit, but thats when you get up to 70!!!!!
All the best with the new set up and hope you sort the problems out. At least you are the front runner in the derv development cause, always a difficult place to be.