I am completely stumped on my clogging issues. I just purchased a e3d v6 24v. I have assembled it per the instructions. I am currently trying to print petg and will clog about 3 layers up. It appears I have some heat creep as the bottom of the heat sink is extremely warm where it is almost to hot to touch. The fan is moving in the correct direction and the heat break is level with the block. Everything was tightened at 285c retraction turned completely off and the correct thermistor was set in the config. I am out of ideas and desperate. I been running clones on all the rest of my printers and decided when it time to replace my primary I would go with genuine e3d and I have not been able to get this to work.