I put in a new coil in the Voopoo PnP rba, I had some pre coiled just for the PnP and works pretty good. I also put a mesh spit ring on top and that really helped the hot juice spitting. Not too bad for how tiny that RBA is. Still have not recoiled the SMRT RBA, will try another in there too and see if I can get it to work. I need to put a new coil in the kayfun mini too. Just been so busy with other stuff 