[Big-Foot]

Bigmike - What is the problem?

If your Holley or BG has ever gotten any water (even from condensation), the holes in the emulsion tubes that are inside the metering blocks can get plugged with corrosion. When this happens you have no end of trouble. You can many times dissolve the corrosion by soaking the metering blocks in a pan of lacquer thinner for a couple of days while removing every 6 hours or so to blow the passages clean with compressed air and then putting them back in the pan.

BG carbs bring nothing more to the table than Holley's do other than venturi sleeves and replaceable air-bleeds (which literally never need replacing).