Corksport Short shifter confusion

I just bought a short shifter from Corksport, and I am having trouble adjusting the height. The shift rod does not get fastened enough and because of this I can't push down on it to go into reverse. It was working out of the box but I tried to adjust the height a bit and now the rod won't fasten. I tightened the two 5mm allen screws but it does nothing.

 

what'd you break... maybe post some pics upload then directly here. how heigh or how are you trying to set it?

 

Trying to set at height shown in the pictures, the rod basically just slides with no resistance.

 

I see a gap between. The sides, is there anything in there? Have you tried raising it up?

 

I clamped it down pretty good and then tightened the screws. It works now but I'm pretty sure I won't be able to adjust it, but I don't feel like messing with it anymore anyway.

 

Wonder what happened.