Well, I am glad a nice and productive conversation came out of something a bit irrelevant, hehe. I am like Esteban. I like the old, 100% retro experience and I prefer it than the new modded ways. Even in my case where the password was just a PAIN. I will keep my Turbo Express original and then gather some more money to get myself another one: one with a new modded LCD screen
So, back to the topic and to help a bit those who may find the same difficulties as me one day:
-- FIGHTER PASSWORDS --
LVL2: ADBFD GNPJC or ADBFD G M PJC (must be this one and the darned N looked a lot like M afterall ;[)
LVL 3: AOBFJ MPKJG
I may keep adding more in the future