the barrel nuts just below the limb pocket. turn the limb bolts back in even amounts(top 2 turns,bottom 2 turns) until you can see the bottom of the limb bolt in the barrel nut.
2)at this point you should be able to remove the cable. if cam leans to the left,twist the right cable a couple twists at a time. if right,twist left cable.
3) nothing strange should happen when removing the cable from its post
4)once you have a couple twists in the cable,put it back on its post. make sure the limbs didn't move from their seated position and turn the limb bolts back in even amounts(2 turns top,2turns bottom).
i wouldn't worry about returning the bow to its previous draw weight. just putting enough tension on the string to see if you got the lean straightened out should be sufficient. if all looks good,rock on
'07 HCA Iron Mace
'08 Martin Bengal
'11 Martin Exile