Mine never leak and never dry hit when puffed at 22 watts or so.I could never stop that rba from flooding but the flavor was there and then it would leak, I never did get it sorted.
Use the bunny ear method of wicking.
Wick the coil and then put the chamber cylinder on working the wicks up thru it.
Gently hold each end up and cut about 2 mm over the top of the chamber cylinder.
Gently poke the wick ends down in making sure the juice flow holes are covered from the inside and that the cotton also touches the deck.
Only used cotton with this method. No tampon material wicks for me.
Wicks last me thru about 40-60 ml.
currently vaping 26 ga ss316l 2.5 mm 8 wraps .5-.6 ohms.
20 - 22 watts works nice.