Shift Mode (key) IPAC stopped working

[Arcade1980]

I changed out some buttons on my control panel, and now the IPAC Shift mode is no longer working.  In the WinPAC software, all looks normal.  Ie. Player 1 Start button is assigned as the "Shift" mode option.  I can't see how switching out some buttons breaks things since I did not make any changes to the software/MAME.  I didn't even remove any of the wiring....

Anyhow..

While pressing the Player 1 start and holding it down, and moving the joystick left is suppose to be equivalent to the ENTER key, but nothing happens.

None of the other Ipac SHIFT key button combinations aren't doing anything.   I did the individual button test and all is fine and responding...I don't see any stuck keys.

Thoughts anyone?
Thanks

[Arcade1980]

Nevermind...figured it out.  Connection to a switch was in the NC