I get the white build up as well....kind of looks like vaseline. I was told by C&S that it's water in the alky. I have since switched to a Holley and still get it in the bowls, but not as much. We buy our alky from the track and I store the carb and fuel pump with WD40 in them over the winter. I don't typically do anything to them during the week as we race every week. The vaseline type stuff has never hurt anything to my knowledge, we now take the bowls off about every 5 nights and clean it out.
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