Holley 4150 dripping fuel from primary discharge nozzle?

Now that the T-slot is square, if it won't idle without pressing the gas it probably means it needs more air. Again, pull the carb off, flip it, there is an adjustment screw that will crack open the secondaries to let in more air (should fix this)...if this does not work there are other ways to get more air, but you should probably try this first...the other way I know of involves drilling the throttle blades, and should be a last resort.

Here is a link with a picture of the adjustment screw I'm talking about (picture on page 2):

http://www.onallcylinders.com/2013/...operly-set-up-the-idle-on-holley-carburetors/