Hi Ho @Silver your wicks are just fine and I do mine with similar short tails... and yes the Royal Wicks is certainly the best wicking material (for the BB and Skyline anyway) around. I just noticed the wick in the Ultem tank is really short and I have refilled it twice and no issues. The wick on the right in the Nugget with Flo is pretty much ideal.
The ultem tank is not a chicken dinner and you can see a bit of leaking from that rubber plug.
The ultem tank is not a chicken dinner and you can see a bit of leaking from that rubber plug.