The UJ's should sit in the same plane - so if you look at drive shaft end to end, UJ surfaces are parallel. I'd post a pic but I dunno how anymore (does the pic have to be already on line?)   Does this help? (Driveshaft w UJ either end viewed from above) >          XXXXXX                                                         XXXXXX XXXX      _________________________________     XXXX XXXX   O_________________________________O   XXXX XXXX