I have a hana clone mod that has a super tight battery compartment. It works perfectly otherwise, and doesn't seem to be damaging the batteries, but it is HE!! getting the danged things out. I have to shove the 18650s in, but getting them out I've had to pry them out. My question is, can I put a thin piece of ribbon or yarn around the body of the battery, like you see in some battery compartments of other types of things to help pull out the batteries? Or will that create a problem with the negative grounding?