Has anyone in here successfully exchanged old scrip tickets via Port Authority NY/NJ for 90% value?

What was your experience like? I have dozens of $3 tickets and want to redeem them but not sure if *actually* can be trusted to mail me back 90% of the money I put in, how long it would take, what would be the method of refund, etc?

I feel like they would say they only received, say, $60 of coupons if I sent them $100 worth, and then tell me I only get 90% of $60, but I am hoping someone has done this (ideally recently) and can tell me otherwise.

If so, any chance I would have better luck physically marching myself into their World Trade Center office listed for the mailing address?

I have a stack of $3 tickets from who knows what year. They are old. Gray and blue and black.