Atariosimus, I managed to get 38400 and connect at both 57600 and 115200 on modem 2. Unfortunately the last two speeds are not stable and the system keeps losing connection. Still I had success.
On an unrelated note, I am really not sure what I had done wrong with my experiments because I had the same settings as you.. Anyway, thanks, I'll get back to you with any of my findings.
Felix qui potuit rerum cognoscere causas.My Atari blog
STOT Email address: stot(NoSPAM)atari(DOT)org