i have a BMF and a riva...got an adapter from gotvapes so i could use the bloog cartos on the latter but...when i screw the adapter in all the way so it "bottoms out", the battery light starts blinking. when i un-screw the adapter, lift up the battery post and screw the adapter in half ways, it works fine. are all 808 to 510 adapters like this? i have a shipments of bmf cartos coming....would like some help. TIA