Trip Lever

How to install a lever with a spring clip? (Pica)?
I took off from the Order of the pop-up drain in my bathroom sink to a butcher. Well, I pulled the plug. But now I'm having a problem with the lever. http://www.hammerzone.com/archives/bath/projects/remod_w1/vanity_s/faucet_moen84200.htm # Sample of pop-ups resembling AC (spring clip) is what I'm having a problem with. If I have it on the outside of the CAP, the cover shoots up and down as it should and leaks. However, if the lever behind the ball (cue ball) inside the CAP, POP steadily downward. Unfortunately, I can not screw that go straight to to. My question is, is the spring clip means that within the CAP lever behind the ball or abroad? (I think professionals do something simple then … I like doing things myself, and call a plumber to a butcher is just ridiculous.)
Try the following link for step 6 or 7 I think that the diagram can help. Http: / / www.doityourself.com/stry/h2replaceafaucet Hope that helps.