I'm in the process of engine reassembly on my 4. I have a question for those possibly knowledgeable on the subject on the rear Scroll seal. Despite recommendation to go to the newer style seal I decided to keep it as is since my crank was in no need of a grind on the journals..knowing it will leak somewhat as original. My question is: why can't I loose fit the new scroll seal halves on the block and rear bearing cap and then use the crank w/ main bearings in place and tightened to align the scroll seals? Instead of using the " $50 alignment Tool"? It seems to me this would be a better way to align the seals. Also, Q#2: the Bentley manual says to use "Jointing compound on the contacting faces" - Does this mean the contacting faces of the Seal Halves? or on the faces of the halves to the Block and Bearing Cap? Thanks for any advice.