e-z-est dilution question
Has anyone worked with diluting e-z-est in different %'s with distilled water to reduce the dipping effects. I have a key date Morgan with some sort of whitish gunk in the date, motto, dentils, etc. I soaked in 100% acetone for hours and it didn't do anything. The coin is a VF+, looks original, and has a nice leather brown patina that I do not want to strip away. Dipping a VF white kills a coin IMHO.
I've read in the past folks using a 50/50 solution, but has anyone done 10% or other reduced % that 'cleans' up the gunk but leaves the color intact ? There is too much in the dentils to use a toothpick or other means. I thought using a que-tip with this reduced strength dip might do the trick, but afraid of turning the date, motto and rims a whiter color. Not exactly sure what it is, like tissue paper melded in spots. Not too noticeable with the naked eye, but under a loupe and a digital photo it stands out.
Thanks for your suggestions.