I want to try buying distilled and spring water to blend for a desirable TDS without the additional steps of making recipe water from scratch.

Admittedly, I’ve being weighing and single-dosing so long that it’s second nature, but I find it hard to imagine it’s not less frustrating overall to do that than to deal with what you’ve described. I’m also less familiar with the Sette, but I’ve done a popular flapper mod that keeps the chute clear and my Vario responds well to an RDT/single dose workflow.

One final consideration is that burrs wear and account for some variance, but that’s likely the smaller variable here.