Edelbrock Carb Flooding, HELP?

[429mustang]

I'm using an Edelbrock Performer mechanical pump which is recommended for use with the rest of the edelbrock parts (I'm using an RPM intake/cam), although it says the pump puts out around 6 psi and doesn't NEED a regulator. Would 1/2 psi make a difference? Also, the pump wouldn't be putting out that much at idle anyway, so that wouldn't really explain it running rich even at idle or why it would run like a dream for a few days then turn to sh*t. What could possible be changing over the couple of days except for a messed up float filling slowly with fuel or maybe it just happened to have some dirt get in it both times around the same time, but I'd think it might clean out eventually or my fuel filter would be pretty dirty first. I still need to check the floats for leaks, so I'll try to get to it this weekend. I appreciate everyones input, keep the ideas coming.