Interesting on the steel insert, wish I had known to check before hand. I loctite'd and torqued to 20#. I might remove and back down to 15#. The front didn't show any tabs and the rear is a Omar adapter, it just says to use lots of Loctite. Just flat washers in my kit, no lock washers and I've actually been told not to use a lock washer on AL.
One thing I have learned is to chase the AL threads about every 3 times removed when using Loctite. It seems to promote cross threading in AL.
I expected to find a table in the manual for generic torques and was surprised mine didn't have one. But usually those are steel-to-steel. It does have a engine torque chart and I thought about looking up a similar size bolt there as it would be steel-to-aluminum.