Don't know if you got it fugured out yet, didn't read that far ahead yet, but it has nothing to do with the trigger spring orientation or which connector you have installed. The Glock trigger will reset with that trigger spring ("S" spring) completely left out as long as you hold the trigger to the rear while the slide cycles and don't let the trigger travel full forward beyond the reset "click", so that's not your problem. Make sure you have the left side of the cruciform (looking from the rear toward the muzzle) inside of the little cutout window in the trigger mechanism housing and the rear of the trigger bar underneath the connector lip......problem solved. Here's a diagram to help.
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Window in trigger mechanism
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Trigger bar/connector lip orientation.
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