I received my hotend order today. (Thank you for the gummy snacks. Nice touch.) Upon inspection of the heater block you sent me, I noticed it is considerably different from my other two E3D heater blocks. My new one is missing holes and the holes that are there appear to be shifted in relation to my other blocks. The new block does not have a hole for a thermistor (as far as I can tell), but has a super-tiny, shallow hole centered with the threaded hole. The thermistors I have will not work with it. Is this a new design or is it a quality control issue? It was not what I was expecting and looks like I will need to modify it to work, but I want to be sure I understand first. Thank you.