Give it time for the temperature to settle. Blending is exothermic and temp rises. As the temp is crashing back to room temp it will make your gauging go all over the place. Also, allow for all the air to dissipate from the liquid after you stirred it. The air bubbles will make the hydrometer sink just a tad lower.
Also, if you are in Ohio, make sure you have your State Permit before producing. Common misconception that the Federal permit will allow you to produce, and may be true in some states. But in Ohio, you gotta have your State permit in hand before distilling.