you are missing the point on tightening main caps(and many other fasteners)to a specified "degree", not torque. The reason they do this is 1-bolts are often one time use and they stretch. the second is that to use a degree wheel specified for tightening is much more reliable than a random torque wrench. I have used torque wrench for years, but when I just re did my M62 I learned that I needed to do things differently. You weren't clear as to whether you used the right tool or not. If you didn't, I would recommend doing it all again per the factory instructions.

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Dave S.
Northeast
2003 4.6is
2005 E53 4.4
2003 E39 Msport(a REAL ONE!)
1959 Fiat 600