Jim, that sounds like par for the course, see my prior thread on the same thing here:
http://forums.pelicanparts.com/showthread.php?t=379187
OK, what part number for the bolts? The ARP catalog says 204-6005, which are the M9 bolts used on the 3,2. Is that what you are using? The stretch spec is 0.0120" according to their catalog. You stretched to 0.05" on the first one or about 4x the correct stretch. I would be surprised if the bolts haven't taken on a permanent elongation, check their length against the pre-stretch length, they are probably junk. What was the torque wrench reading when you did this, it should have been a clue that the stretch was too great. What stretch gage?