604sm help with final adjustments please

/+recently purchased 2013 vermeer 604sm at estate sale and trying to get it ready if it ever stops raining.  

PLEASE help

1) Trying to optimize netwrap and the book says measure 3 1/2" from shear bar and horizontal spring steel.  To set timing marks.  Cannot for the life of me figure out what horizontal spring steel is.  Is it the roller that has a wire welded around it that spreads net wrap?  Even with picture am at a loss.

2)Baler has field upgrade that repositions netwrap brake spring.  Baler is cutting and ripping net to early so I figure I need to loosen spring tension.  How do we adjust this upgrade spring tension is not in vermeer manual.

604sm help with final adjustments please