Installing on a Robo 3D, no issues until I realized I'd installed the fan on the wrong side of the heatsink. As I slid it off I bumped the heater block and it twisted a little bit. I have not heated it up to do the required torquing. My understanding is that I want the brass nozzle to seal against the stainless steel rod inside the heating block. I don't think this would not require the block to be torqued in against the SS rod (which is supposed to be level with the top of the block) in order to make the seal. However, I'm concerned by the fact that the heating block can swivel a bit currently. Am I on the right track or should I adjust my threading of the pieces?