ES subframe bush questions, help!

[immy21]

Hi all, i had a search around but couldnt find the answer

I am fitting (trying:() ES subframe bushes and am stuck, in the instructions it says leave the tabed coler in as it supports the bush which is fine for 2 of them, nice snug fit too
http://i795.photobucket.com/albums/yy233/21immy21/IMG_0693.jpg
http://i795.photobucket.com/albums/yy233/21immy21/IMG_0691.jpg

However for the other 2 (diff side) they have a full lenth coller with a lip on it, no tabs, the instructions make no referance to this, the fit is much tighter than the other, iv not tried to fully press the bush in incase i cant get it out again.

If i cut the coller out im worried it will be too lose and the botton stock washer will fit through the subframe when the car is jacked up
http://i795.photobucket.com/albums/yy233/21immy21/IMG_0694.jpg
http://i795.photobucket.com/albums/yy233/21immy21/IMG_0695.jpg
http://i795.photobucket.com/albums/yy233/21immy21/IMG_0692.jpg

UK spec 200sx s14 kouki, Energy suspension bushes for 240sx
Do i cut the coller out or not?
Are your 240sx subframes the same?
Any advise appreciated