I have the damper installed, however the directions are slightly complicated to understand as it appears that it was written by some french guy with only 6 months of english lessons. I need to know what the 4MM is in english terms. There is no way that the space is only 4mm in english measurements. I have attached some of the directions to give you an idean of what I am trying to explain.

 

I think they are trying to say to leave 4mm clearance when the bars are turned all they way to full lock. I just messed with mine til it fit nice.

 

C'mon now Jimmy. You shouldnt need directions for this.

 

divide 4(mm) by 25.4 and that will give you the conversion. it is a .157 or 5/32

 

At least U got a picture mine just came with the written instructions not sure what there tring to tell U. I thought I had already seen a pic with it mounted on your 900.