Well, gol danged, Capt'n.... If ya gotta use an open end or box end and we're talkin' 15-20 pounds you can use the torque wrench on one you can get to then back it off an 1/8th turn, retorque it with an open end and then you will have a feel for how much pull you gotta put on the inner ones... Like I said earlier, or maybe I didn't, bolts is alot like womens... Once you got the feel then the rest is gravey...

That's a-bolt it from here...

B~