I want a flat 510 connector like the rest of them. The buzz pro is a great device, I've had the pleasure of trying other VV devices and i still prefer my BP but why the raised connecter? I would really like to see it possible in the future to buy a flat and "flush" 510 connector so my tanks look neat. Changing the connector is no issue so i have faith, you'd really have to own one to see how well this thing is put together. The top cap has a rotating piece inside so the wires don't twist when you put a new one on or unscrew it. No soldering is required to change them, the red (hot) wire has a washer piece attached to a screw in the center of the spinnin mechanism that keeps the wire from twisting. Unscrew that, remove the washer and place the new cap on. So, can ihaz flat cap?