Micro Swiss FlowTech™ Hotend for Creality K1 / K1 Max

I have a huge problem. I hear tons of good reviews about this hotbed, so I purchased 2 for my new K1 Max. Just received the printer and hot ends today. Didn’t even run a print throw the stock hot end, I immediately changed to the MicroSwiss. My problem is, when I try and do the extrude and retract before my first print, I get no extrusion? Before I tried to do the extrude and retract thing I tried to print a Benchy and nothing, so then I watched some videos and saw to run the extrude and retract deal, still nothing. Any help would be appreciated this is my first printer and i am already discouraged.
Thanks innadvanced.
Oh. I was on chat with Creality for 2 hours and they said they will just send me a new extruder.

I was watching the 3-D printer nerd Joel, and he announced that Microswiss had made a new nozzle. Correction, a new hot in for the K-1 Max, and I was skeptical About how good it was, but decided to go ahead and buy one and see. I have about seven 3-D printers three liquid and four FMD. I have never ever had a printer print so well using all types of filament TPU,PETG, and nylon it just prints that nozzle is fantastic and I’ve had one or two clogs when I was pulling the old filament out, if I didn’t pull it out fast enough, the only thing I would get would be a droplet inside and it would prevent the filament from going back in but being able to just remove the nozzle so easily there’s no such thing as a clog anymore it’s too easy to fix . Micro Swiss you folks did a great job. Now just make a hard nozzle for the system and then we’ll be solid. Thank you. The photos are of a mini dragon being printed in TPU.

I have to return my K1 Max twice and have gone through all SIX of the hot ends all of which died due to a crappy heater block and other hot end issues. I was googling possible fixes when I saw a YouTuber mention that there was an aftermarket hotend for the K1 Max, that aside from being able to do cold nozzle changes, also WORKED. So I followed the YouTube link and found the FlowTech Hotend for the K1/K1 Max. I was 4 days past my return window with Amazon, and Creality's customer support answer was to have me solder stuff on the hotend bcb, I decided to take the risk and ordered the FlowTech.

OMG OMG OMG!!! This hotend is stupid easy to install, and it frickin WORKS!!!!! For the first time ever, my $1000 paper weight actually printed stuff. Repeatedly! It's been going pretty much non-stop for three weeks now. No issues, pla-cf, petg and abs all print beautifully. I even did a cold nozzle swap to see how that went, and it was quick and easy.

THIS is how the K1 Max should have run from the start. Thank you Micro Swiss for saving my K1 Max and my sanity!!!

I bought 2 at full price now I just seen them down to the same price I paid for one and could have got 2 for half , not far .

It’s been printing wide open for the past week. Mostly PETG, ABS, and ASA. Haven’t had any concerns with it and have switched out the nozzle several times from .4 to .6 to .8 and back. Only issue I’ve had is the screws backed themselves out and caused a jam after probably 60 hours of printing. I’d recommend a dab of Loctite on them to prevent that from happening. Could do with more robust replacement options down the road as well for the more abrasive filaments. “Wear resistant” brass sounds like typical marketing and I’m sure I’ll see the effects sooner rather than later.