Okay,so I went and got my factory corners out of the base ment so I could describe them better to you.Don't be embarassed they totally suck and make everyone who takes them out feel like an ass!!
Where you took the screw out is actually a plastic "arm" which is part of the corner lens.As you're prying the lens out you may have to check and make sure that this "arm" isn't getting hung0up on anything(this happened to me and I didn't realize untill after I had a tantrum and went into the house).
Also there are 2 plastic guides,they just help to line up the corner nothing special.But near the bottom is a metal "tab"(for lack of a better word).This was the bitch for me.Mine had slight corrosion and basically seized into the hole it was in.The "tab" is also sort of "balloon" shaped to help lock it into position,it's a tight fit,obviously this is something that Honda didn't plan on having people replace often.If I had a digital camera I show you pix,maybe someone will be kind enough to show you what the back of the lens looks like.That's about it,I don't know what other advise to give you.