Rough & Not Quite Ready Yet

[original condor]

The pin does look deformed. It may be just an optical illusion, but the top of the mounting pad welded onto the diff. case does not look flat in how it meets up with the 4" block, which does look flat. I dont see any distortion in the sides of the pad though. I can't afford to tear apart and fix at this time, so I need to tighten them as tight as is wise, and then make sure I don't romp on it till i got it right!.......How tight can I go? I got the standard 18" long 1/2" breaker bar, & I'm a scrawny 60 year old 160 pounder. No torque wrench available, so trying to find out if I can hurt anything by getting too tight? I would love the spec. also, so when I get a clicker, I can get it right.
....................Thankyou in advance..........Steve Rieck