[Elecraft] Straight key and microKeyer II not working together

[Rich]

The Bencher BY-1 works, the Begali Spark doesn't. The Begali is set up 
with a stereo connecter, tip and sleeve.

I'm trying to use a Begali Spark straight key and a Bencher BY-1 paddle 
plugged in at the same time (I only use them one at a time) via a Y 
cable.  I understand that this should work, but I'm missing something.

The Bencher is connected to my microKeyer II which is normally connected 
to the K3 back panel Key jack. This works FB.

Then I inserted a stereo Y cable into the system between the K3 Key jack 
and the microKeyer II and connected both keys (Begali stereo into one 
female end, and the microKeyer II key plug into the other).  The Bencher 
works, the Begali doesn't.  I reversered the keys and the Bencher still 
works, the Begali doesn't.

Works means that I hear dits and dahs and see power out.  Doesn't work 
means I hear dits and dahs but no power out.

I used a different Y with the same results.

I verified that the Begali is set up with tip and sleeve connected.

The Begali does not key power when plugged into the K3 Key jack alone.

I must have a setting wrong or something, but I'm missing the detail.  
Any help will be appreciated.

Thanks.

-- 
Rich
NU6T