elmanchez PM a couple of days ago, saying he has difficulty come up with the money to pay me, asking for a extension.

Now I made my decision not to pursue that $85 he owes me

I went all these troubles to prove myself that I got scammed and lost $85, because someone didn't believe my story.
And after some conversation with elmanchez's friends, I will accept his story he is just a careless kid who made a terrible mistake that costed me $85

There is no reason to push elmanchez at this stage.

I will write off his debt and close this case.