this is the second part to this post. The problem arose in different pads, that the xbox360 trigger does only function, when released. Or no button is working until both triggers are pressed.
If tis happens, then you're no more the unlucky guy! Here's is a fine and cheap solution based on the work in the SRK Forum mainly Cpt. Zombie and Toodles. On the basis of this work I've drawn a schematic.
Yesterday evening finally I give it a try.
Top with one pullup
Bottom with one pullup