[Elecraft] KX3 + fldigi (PSK31)

[Kyle Krieg]

Hello all. I've looked through the help topics and didn't see my issue
asked or resolved, so I'll ask it here, as I'm a digital newbie...

Using up to date fldigi on a Windows Vista laptop.  Signalink USB modem.
KX3.  Hamlib for rig control within fldigi.

I hook everything up, put the radio in DATA A mode and follow the
instructions on this webpage
https://k4mtx.wordpress.com/2013/04/11/kx3-fldigi-setup/

My questions are

1) I don't see the whole 3khz waterfall.  My filters are wide open, but
there is around 750hz missing towards the bottom of my waterfall.  Is that
normal?  My waterfall ends abruptly at 3khz, so I know it's working and I'm
able to see other stations transmitting and it's decoding on fldigi.

2) When I transmit, I'm not able to adjust my ALC, which in the webpage
above, I should be able to adjust that? It looks like that option is turned
off in Data A mode?

3) Should my transmit signal be spilling out of my yellow bars when I
transmit, or am I over driving my signal?

4) After I get done transmitting (audible tones), it hangs with the TX red
light on and does not automatically go into receive mode.  I have to hit my
XMIT button to return to receive.  Then I can see my waterfall.  I've
checked my macros and they all end with <RX>.  I'm sure there is a setting
I'm not seeing.

Thanks for the responses!