help quick: trim bump stops?

[Fenvy]

installing suspenntion today

have kyb agx, eibach sportline and kyb shock boots,

the eibach sportline paper say to trim the front bump stop 15mm

but the kyb shock boot looks like it has the bump stop built into the boots, so do I need to trim it? and how do i trim it if it's in 1 piece?

[Phax]

I just installed AGXs on my car yesterday. I took about a third of the material off of the bumpstop. I wish that I could be more specific, but I bought my car with Bilsteins on there, so I'm not sure if the bumpstop I used was the 'stock' one, or one that came with the Bilsteins. I have about two inches of bumpstop material left.