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to elaborate more on this, have you used the same primer each time (if its included in the kit, ignore this). Different kinds of primer require different amounts (Corn vs. Cane vs. Malt extract etc...)
Seconded on using as a cleaner but not sanitizer. Especially the first time I use some bottles I run them through an OxyClean soak to remove labels and such. Rinse and sanitize after and you're all set!
