Ender3 V3 SE printer nozzle/extruder clogging

[GAP]

After this fiasco I remedied the problem by selling the Ender3 V2 and buying another Ender3V3 (bit of a win at the local club members draw paid for it).
https://gardenrails.org/forum/viewtopic.php?t=14473

Sure enough as soon as I had the new on ready to go, Mr Murphy came and tinkered with the older one.
After about 30 minutes after starting a print I checked up on it and found the printer going through the motions but not laying filament down.
"Aha!!! nozzle clogged" says I.
Removed and cleaned nozzle to no avail, problem still there.
Checked with Dr Google and found a video on how to clean the extruder using a probe supplied (wondered what the large diameter thing was for).
Pushed out some residual filament and reloaded from the spool.
Started printing again and "success" cries I, but Murphy wasn't giving up that easily.
After about 15 minutes same problem.
Decided to change the nozzle and a piece of Teflon tube fell out of the extruder.
Back to Dr Google and found extruder disassembly video and low and behold there are 2 pieces of tube in the extruder one long and one short.
The short one has something immovable in it that was causing the problem (it looks like whatever it is has burned its way into the side of the tube.
An email to Creality asking about replacement parts received a reply of "if you did not buy it off our website we can't help".
So I resorted to cutting a new piece of tube using the old one as a length guide.
Voila!!!! printer is now happily printing away.

As an aside I put a roll of eSun filament onto the new printer and it is working fine so maybe the problems I had with it earlier were not caused by it but the extruder blockage.

[GAP]

Update;
The prints went well overnight (used eSun on one printer to compare filaments) but the new pei bed really holds onto the prints it is struggle to get them off, it is the eSun filament so will try it on the other printer to see if it does the same.
I am trying this that I found in my local Jaycar store.
It is designed specifically for high temp materials PETG, ABS, ASA, nylon
https://www.jaycar.com.au/3d-printer-be ... h/p/NA1102

This is also available it is designed specifically for PLA+, PETG, ABS, ASA, nylon, should have gone to specsavers and read the label as I am using PLA+.
https://www.jaycar.com.au/3d-printer-be ... d/p/NA1100

Another side note I was using disposable dish cloths with IPA to wipe my beds down and had trouble with adhesion, I have since changed to microfibre and IPA and have had no problem
I have surmised that there maybe something in the cloths that was leaving a residue that affected the adhesion but as I also unclogged the extruder on the printer that was having issues I cannot definitively say that was a problem.