help with leaking carb....

[draggin49]

So I went into town like I do every morning to get a cup of coffee.
Fired it up, let it warm up. Get going and suddenly the thing will hardly idle and is running super rough.it had been running great. Its a gm crate motor, all new accessories, new edelbrock 600cfm electric choke carb.

It died on me once on my way limping it home.

I get out , pop the hood and its visibly leaking gas!!

I snapped a pic of the spot on the carb where its leaking. I noticed there was a visible gap and that little piece was loose, its on the left hand side of the carb near the back