How to change injector o-rings?
 

I'm trying to change the o rings on LS1 injectors, but I don't know how to get the bottom ones off. There's a brown plastic ring at the very bottom that holds them in place. It doesn't look like the ring comes off and I don't think I can stretch the o ring over. Has anyone done this before? Thanks!

Yes, just put some oil on it & use a small flat head screw driver & stretch it over the plastic sleeve.