One problem with the threaded V6 is that the standard V6 fan duct doesn't work very well with it. Other than that, I love the threaded mount. I am simply using a tap to cut threads in 10.7mm printed holes. I created a fan duct that works better with the threaded-mount V6 - the flange for the fan is below the upper heat break flange and above the heater block so it can't come in contact with the mounting surface or the heater block. STP attached, use as you see fit.