As stated by our non sparkplugger friend ! That is the correct torque spec.
We use never sieze on the plugs ,we also change all boots when in there they can prevent misfires .Also we use dielectric grease on the end of the boot going over the plug ,then a little dielectric grease around the lip of the boot that seals to the head .This helps repell moisture and any water splash from getting down in the plug hole.
We also stick with the stock plugs ,because these engines seem to not like aftermarket brands.
ZRich