Here's the service manual, just in case you don't have it.
http://www.rjh-heritage.ch/index_htm....8_4.2_C-I.pdf If you scoot down to page 87, that's where Section H, Rear Axle, starts. A couple of pages later you'll find the float specs. Hope this helps -- old Jag service manuals are basically a PITA, but you got to have 'em, as the say....
