[Elecraft] K2 RTTY setup

[Tsachy L]

Hello all & happy holidays (be it Xmas, Hanukah etc')

Please advise for best procedure to do RTTY with the K2.

I need info about the filters setup & best way for audio interfacing inside the rig.
Is direct audio-feed (Isolated from computer) to P1 pin 5 ok? any  impedance matching\ decoupling required?
Also, since I am used to FSK & MMTTY, but Have considered MixW (The demo Looks quite impressive) for PSK & AFSK,
Can anyone suggest the proper routine to show the right carrier frequency while in MixW ?

P.S: first operated CW seriously in CQWW - what a ball - I knew it would be like that, but it was better!
Tks Elecraft.

73 & Thanks in advance, Isaac, 4Z4TL, K2 # 1574.