The Velocity 2 clones, including Tobeco, have a removable hex plug for the BF pin. It may have looked like it wasn't drilled out properly, but it was just the plug. The V2 had the same feature, as do the clones. I use a V2 clone, not Tobeco, on my DB160 and has the same type plug.I got tired of waiting on GeekVape to release their GBox S100 so I went ahead and ordered a Dripbox 2 yesterday from MyVaporStore as my first squonker. I have a Tobeco Velocity V2 but I noticed the included BF pin was not drilled all the way through. Luckily it was deep enough that I managed to get the rest of the way through with a 1/16" drill bit. I also have a Tsunami 24 with a BF pin. I'm wondering if I'll have much overhang with that one on the Dripbox 2?
Velocity V2 RDA Clone By Tobeco
"Please Note: The bottom feeding screw plug is preinstalled and should be removed using the included 0.9mm hex key for squonk mod compatibility."