Two sets of pliers, one to hold the KFL base the other for the Neme top cap. Leverage is what is needed. I wrap my plier jaws with thick electrical tape so I won't scratch my devices.
That could break the 510 pin on the kayfun though, so use this method with caution.
However thanks for a great advice with the electrical tape!
I've to do this aswell, due I've another issue with one of my kayfuns. The bottom tubing part (pmma part, it'll scratch/break easily with my pliers) is stuck on my kayfun base. Somehow juice got in the threadings and i think that's why i can't remove it. Quite annoying due i want to clean it.
As you can see on this picture:
Oh well i hope you'll manage it, TS!
