@MeirTaitz do you put different liquid in with the same coil (in stock coil tanks) and the same wick (in rebuildables)?
If you mix your liquid without changing your coil/wick, it can have the same effect as well, as there will always be remants of the first liquid in your cotton/tank. Too much mixing of juice on the same tank can cause these problems too. Stick to one liquid in one tank a week, only change your liquid when you change your coil/wick.
And yes, like @CJB85 said, post some build pics when you are rewicking on the Wasp. Go watch my wicking video (the second part, not the roundwire coil) I sent you a couple of times and then play/pause as you build it yourself too. With that wicking method I chucked juice through that tank for days without having to rewick or change anything. But also, use DL juice (70/30 or 80/20) with the Wasp, not MTL Juice (50/50). Otherwise you are going to get a lot of leacking through the bottom airflow very quickly, especially if you run at higher watts and the juice warms up.
I have watched your video 4 times, but remember that I bought it 2/3 days ago and the guy in the shop put the coil in and wicked it for me. He said the wick should last roughtly a week, so I haven't touched it yet and assumed he should be good at it. I have stuck to one liquid so far since I got this rta (70/30)
I was actually planning to go buy an ultrasonic cleaner tomorrow, because I'm far too lazy to wash by hand. I assume you can just take the wick out and drop the coil into the cleaner and the taste of the previous liquid should be gone? That's how I imagine it anyway
I'm going to take this guys wick out and do it myself just now. Hold thumbs I don't fsck it all up!