The only issue I had was with the FW1A head, that had blue glue (thread locker).
I am not sure if the same is happening to yours.
This is what I got by that time: Lumintop FW1A discussion and review - #381 by MascaratumB
It needed to get some heat and…some pliers. Not even gloves or rubber keys were helping. I ended up “damaging” the knurling but then gave it a new look.
About the glass lens vs plastic optics, that was an initial thing that was later resolved. Lumintop was not able to sort Carclo 10511 optics at first, but then bot options were possible.
I picked one from the firts batches and it was already with Carclo optic + glass lens.
BTW, to remove the ring from the bottom, you can use nose pliers, pointy tweezers, and there is also a specific “tool” for that, that I don’t find necessary.
https://www.aliexpress.com/item/4000340638255.html
