Incognito STICK(3) and STRIG(3)

As much as I have tried, I can't figure out the Incognito's joystick ports.  I have 3 & 4 enabled in setup, but a simple BASIC program:

10 ?stick(3),strig(3):g.10

does not show those ports working.  All I get is 15     1.

I *AM* moving the stick and pressing the button.

Any ideas?