I have experienced some difficulty in the process of removing the oil pan from an M50 on a 92 525i. After removing all bolts (including 3 which went through the manual transmission bellhousing) and followed the instructions in the Bentley manual, but after tapping the pan with a rubber mallet and prying gently with a screwdriver it doesn't come off. Basically, it seperates in the front but something in the rear seems to be caught up. Anyone know how to get these things off? Thanks