Bilstein 5100 rear shock Install help

Alright so I feel pretty dumb at this point, but I am having trouble installing the rear 5100s. I can remove the stock shock and put in the new 5100, but I can't seem to get the bolt to tighten on top. It is one of the locking nuts, so it has to get past that rubber part and the shaft of the shock spins. Unlike the stock shaft, there is nothing to grab onto to stop the shaft from spinning.

My only guess is that I am putting the spacers in the wrong order or something, but that still doesn't explain how you stop the shaft from spinning. Here is a picture of the peices that came with it and the order I put them on from left to right. I put on the first 3, then put the shock in the mount then put the last 3 parts on top. Is this the incorrect order? I know there are tons of people who have installed 5100s so I feel like I just missing something here.

 

If memory serves me correctly at the top of the shaft is a cutout to use an Allen key to hold the entire shock from twisting while you tighten up the top nut

 

Gotcha, didn't even think to look for that. I think I remember reading something about that. Thanks!

 

x2, top of the shaft accepts an allen key to keep the shaft from spinning while you tighten the nut down.

 

Just remember.. metal washer/rubber grommet/rubber grommet/metal washer/nut

 

So do I have them in the right order from what you can tell by the picture? There is one darker washer that is a little thicker, and one has a little lip on it.

 

As far as the one with the lip, its the first grommett w/lip going up into & thru mounting hole IIRC, but yeah the order is right..