I just put another CSF in. They're great once you swap out the washers they give you. If I hadn't snapped off the upper drain plug like a dumbass, I wouldn't have needed to swap it. Ravi at CSF gave me a screaming deal on the replacement as I was out of warranty by 3 weeks so I replaced it rather than just fixing it.

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tempted..

Make sure you're cool with the fact that the upper drain plug has been welded shut. The only downside to it is that it'll take longer to bleed the air out of the coolant. Not a huge problem, but it is something to be aware of.

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Sold.