[Elecraft] paddles directly to K3 - not working

[Jorge Diez - CX6VM]

Hello

after many year with paddles connected to SO2R and WKUSB boxes, now I want
to setup a second station for the contest.

All is OK with N1MM sending messages stores in function keys, but I
couldn´t get working the paddles connected directly to KEY in the back of K3

No send dits, and dots are very slow and dont vary if I increase SPEED in
the K3

Any suggestions to check in MENU or CONFIG?

thanks!
Jorge
CX6VM/CW5W