I am checking out the Volcano Upgrade Kit and was wondering if it is an upgrade for the Hemera E3D with direct drive? All it says is its an upgrade for the V6 but it shows as an upgrade if I choose it from the main menu. Also wondering if it allows for .4mm nozzles? In the Eruption pack it is not included and I see the Super Volcano they say it will cause issues but I like the better finish I get from the smaller nozzles. Should I just stick with the stock heater block that came with the E3D?