Originally Posted by FBinNY

I'm too old school to talk torque wrenches. My rule is simple -- you have to tighten the clamp bolt tight enough to do the job, hold the post from slipping or twisting in use, and no tighter. So I approach it by degrees, testing by trying to twist the saddle. Carbon assembly paste provides traction, so the post holds with lower clamping force, which is always a good thing.

The paste comes in two basic types. Some have hard grit and provide super hold, as the grit bites into the post and frame. The drawback is that this scratches the post as you slide it in and align the saddle. The other type uses rubber like particles to grip without biting, and is preferable for this application, unless the grater grip strength is absolutely necessary.

BTW- for those who like to work by numbers, the question remains, what if you tighten to spec and the seat post still slips?