Firstly there is no step by step instruction. Secondly there is no instruction as in how tight or how loose we should tighten the individual screws. I had somewhat managed to successfully sort it out on my own with some prior knowledge and skill with other printers. Lastly after inatallation, the last known issue resurfaced again when I was using the stock plastic extruder clamp kit. There should be some scenario documenting the extruder gear is pushing but the filament is not moving and the gear continues to graze the filament after successfully printing for 1 hour. It is very difficult to ascertain the root cause and we often end up buying this metal extruder clamp kit, Capricorn tube, PTFE tube, Nozzles, Hotend, Hotend Block, thermistor, heating element, etc. When a user finds that the stock extruder gear is grazing the filament, we will tend to get a replacement for that. Think it will useful if some scenario be included so we can know why we are buying this. Overall the initial layers printing result is astonishing albeit unable to achieve completion without a clog or underextrusion. Hope this review can help other would-be buyers too. Just my 2 cents. Thank you.