Carburetor Overflowing!

[chefk85]

I rebuilt the old quadrajet today and after installing it into the truck I have an overflow problem. I'm assuming I set the float wrong or possibly having needle seat issues. I cannot for the life of me find the correct float specs. when I look up the carb number it says 74-77 trucks and there are differences in float height. So I set it at 11/32 as it was the most common. The engine is a 283 but I'm setting it for a 350(not sure this matters a whole lot). On my way back out to reset the float height and inspect needle/seat. I did find a few interesting things in the carb as I was rebuilding. First there were two check balls in the carb. I'm sure theres only supposed to be one. Also seems the PO got the wrong carb kit as the gaskets did not match up with carb passages. Hoping that after I correct fuel issue it will run and not bog. If anyone has had this issue and I'm missing something please let me know.

Thanks