Tornado_bed_leveling_knob

Knob for the beginner with sore thumbs of leveling. Easier to loosen from the bed due to waffle structure on the bottom of the knob. I am also a beginner at the moment and tried almost all the knobs without much success.

With detaching the knob you can lose a square of the waffle. It is not part of the construction. You can print a nicer knob if you have more experience.

Put the knob upside down (waffle up)
Heat the original knobs of the tornado and press them in. Don't burn your self :)

Overall tip for the frustrated beginner with a Tornado: lower the bed-temperature to 70 or 60 and let the bed cool down before detaching the printed object. Don't use a brim. The stickyness of the bed will become more forgivable in time.