Tightening torques for carb to intake manifold 308

I've looked in the workshop manual, and I can't find any torque specs listed for this nut.

These manifold studs that the carbs get attached to use standard nuts pressing down on special tapered washers... Over torqueing, I understand, can contribute to the carb base warpage.

Any idea of this spec?

Ideas?

There is no specific spec I'm aware of. This is a good example of an area where "feel" is critical.

One must feel (sense) that the nuts are tight enough to never loosen, all the same and not over tight.

Regards, JRV