If there's nothing floating around in it then it should definitely be homogenous, I'm not sure why everyone says to shake it. That's not how solutions work. The only thing would be if your solution is actually still partially a mixture, with powder still floating around in it, in which case you shouldn't be dosing it until you get in homogenous anyway.
Btw, speaking of non homogenous solutions, there's definitely more than just a couple specks still floating in mine after closer inspection. I'd say there's maybe 20 1-2mm flakes. They don't really look like powder which is the odd thing, since etiz powder is so fine. More like little pieces of paper almost. I think I'm going to try and suck up the solution on top as much as possible, and then take the specks and add a bit more 75% ethanol and heat and stir, I'm wondering if it's actually etiz of just insoluble impurities.
I think the problem was that this time I made the solution I mixed the 75% ethanol with about half water, and then added the etiz and heated. I was left with a little bit that refuses to dissolve. Previously, with this same batch, I made a solution made with the same ratio of 75% alc mixed 1:1 with water, but I heated the etiz in the 75% alc and got it dissolved all the way BEFORE I added the water to dilute the alcohol a bit. Of course it's important to do this gentle heating and agitation in a closed bottle so that the alcohol doesn't evaporate at all.
Just in case any one else had the same problem, maybe that info will help. In case it's not obvious to anyone reading this post in the future, ethanol solutions need to be tightly capped and protected from evaporation so that the concentration doesn't creep up higher. PG is surely a safer option due to it's much slower evap rate but I don't have any and I don't want to ingest it for health reasons.