Duuuh - I'd never thought about using my kitchen scale to calibrate the scoops that come with Salsa's supplements.
Just sat my digital kitchen scale by the door so I can take it out and do this!  Interested to see the results!
Thanks for pointing this out!

Tracy
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Tracy and Salsa (1999 model year Paso Fino)
Middle TN USA, September 2019
Case History  https://ecir.groups.io/g/CaseHistory/files/Tracy%20and%20Salsa
Photos https://ecir.groups.io/g/CaseHistory/album?id=95827