I tried to fit my o-rings from my stock 1.8 injectors on to my 460s, and it doesn't seem like its going to work (almost broke the o-ring). Searched and found nothing, so I thought I'd ask. What o-rings am I supposed to be using? My 460's didn't come with any.

BTW: These are the hard o-rings at the bottom of the injectors, the top 2 are there.

 

indentical.

 

****. I guess mine are just old and brittle. Thanks.