Hey all!
Long time no see!
Kas, I wish I had any advice to add to your dilemma, but it sounds like you’re on the same troubleshooting path I would take.
On other note, today I discovered something surprising!
I found that the nylon airflow screws are compatible with the airflow of the Kayfun v4!!!
I recently acquired a SunBox Zero Nega 2
The atomizer drop on this device is very large, so I had to crack open the vault and find a “tall” tank in my collection...because even in Long Mode, the KF19 is too short!
After years of using DVARW, Calix, and even the Kayfun Lite 2019, I’ve been spoiled by Nano tanks...but they’re all far too short to use on this particular side-by-side mod.
Enter...or RE-enter...the Kayfun v4.
I forgot how much I truly love this tank.
After building it out, I realized that the internal airflow adjustment screw was a tad loose for my intended purpose...I never used the 4S-kit for these tanks...I just took the airflow screw out and loved the airflow that way.
Well, I knew the Kayfun Lite 2019’s had nylon screws, which are perfectly snug in regards to threading...so I gave it a shot.
I had to dig through some boxes to find the original “failure” short versions, as all of mine have been swapped to the longer nylon screws.
I popped the shorty into the Kayfun v4 airflow, and VOILA!!!! I was able to dial in my preferred MTL airflow, and it doesn’t come loose anymore!
I also had to dig out the 510 base, as all mine had been converted to P3 threaded bases...geez I wish Provape had been able to release their plan for a 60-watt Radius chipset side-by-side mod...curse the FDA.
It’s moments like this, that I am glad I hoarded my collection...otherwise I’d be up a creek without a paddle!
Here’s a pic! (I would NEVER use this large of a tank on a Radius or Dani Mini...it’s WAY too tall.)