PSA Ticket submission question

[Jetsfan]

Hi,

I am predominantly a vintage baseball card collector, but I hope you will allow me to ask for your expertise on submitting a non-sports ticket to PSA. It's a ticket to Andrew Johnson's impeachment trial in 1868. Tickets including the stub are fairly uncommon. I already submitted it in the same holder as I received it. PSA is sending it back as a N9 grade. When I called them, they said it was too fragile to slab. I'm thinking it was because the ticket was secured too tightly in the case shown in the photos below, secured on the sides with staples. The PSA rep suggested resubmitting in a holder that would be easier for PSA to remove the ticket from. I was thinking of sending it back secured in a plastic bag in which the ticket would fit well (then covered tightly on both sides by cardboard for shipping. PSA should have no trouble removing it.

Was wondering if anyone had any thoughts/suggestions to maximize my chances of getting this slabbed. Not looking for a number grade. Just want it authenticated and protected in the holder.

Thanks so much

Adam