GM 3.8 upper intake manifold replacement issue

[caboclo3]

Just today,when replacing the UIM on a naturally aspirated 95 Pontiac Bonneville 3.8 with a Dorman upgraded type from my local auto parts, I ran into an issue that may help others . When following specified torquing sequences and specs , be very careful with the 1 long stud (#7), as it will split your new manifold there if you try to torque to 89 in/lbs.Took 1st back for replacement ,and the second new one started to split at the same place.Was using a brand new Craftsman in/lb torque wrench set correctly and following instructions exactly. I've seen a lot of excellent info on this UIM issue with the GM 3.8 ltr 1995-2004 years, but never this issue with the replacement ones. If I have to change this again will definitely go with the aluminum one. I do so HATE dealing with nylon/plastic whatever non-metallic garbage like this.
If anyone knows where aftermarket aluminum UIM for this engine is sold, would appreciate the info.
Maybe my new Craftsman torque wrench was way out of calibration?
Anyone else had same experience?

[Tech II]

Done more than I can remember....everyone was 89 inch pounds......I'd get the torque wrench checked out.....

Always started in the center and worked my way outward.....