First-time guy - and I'll probably forget to ever check for a response here.
Who maintains gntreader.com? It cites SBLGNT text, so I thought I'd try here.
I think there's a mistake at John 20:25. The apparatus identifies πιστεύσω as "Verb: Aorist Active Subjunctive". I believe that "aorist" should be "future". It's been 50 years since my Greek years at college, so I could be wrong.
As I say, I may never check this page for responses, so I'll trust in the button that says "email me replies".
Thanks,
Jon