(ET) E-20 Front battery holdown

[Mike Finck <mikefinck rocketmail com>]

I am at a loss trying to figure out something very basic!I have the 
holdown that I have never used. It is two pieces; one flat bar with a 
small hole in the middle and another flat bar with the ends bent to 90 
degrees and a threaded receptor in its middle and there is a thumb screw. 
There are two slots in the body of the tractor where the two batteries 
adjoin but the slots are a couple inches above the top of the batteries. 
Hopefully you know what I am describing. Not too complicated. 3 pieces! I 
can't put the puzzle together . Am I missing an important 4th piece?
Mike
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