340 not running anymore...Help Please?

Update!!!!
Finally got my rebuild kit and started rebuilding my carb. Got it off the car, got the bowls off, and hmmm...... what in the world are those funny little screws. Spent the next few hours looking for a funny looking screwdriver to fit the funny looking screws then finally gave up and made a plain flathead work. I got it all apart, and have matched up all the old pieces with their new replacements and low and behold I have an unnerving number of pieces left over. Gonna look through the book tomorrow and make sure I haven't missed anything and then cross my fingers and start putting it back together.
Wish me luck! :)