Holley/Demon Carb stumble

All my parts are ordered and the last piese will be here on the 31.

What, and where, should i be looking for damage to the $5.00 metering block i got off of e-bay.
How will i know it is worth trying.

YR said something about it could be a alcohol metering block. but after i bought it, the description of the part, when a way, as it was sold.

yellow rose said

Must be a misprint on the 148 main jet. Hope that's not correct. That's an alcohol jet.

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