Who would you let rebuild your Holley carb?

I would look at what size jets are in it, usually 72 is what those are born with. There may be some deposits in the idle circuits of the metering block which may be able to be removed by taking out the idle screws and putting the block in a jar with acetone for an hour or two and then blow it out. Also take a look at the holes in your metering block gasket. The kits usually come with a couple of different types and one will not have all the holes needed for the idle circuit of your carb. Also look at the fitment of your base gasket to the carb and manifold for a possible leak.