So I picked up my VV Grand this morning, pushed the button and ... nothing. Checked the coil on my RM2, made sure the screws were tight ... nothing. Made sure I hadn't switched the unit off, messed with the voltage dial ... nothing. Changed the batteries ... nothing. Panicked, begged, wept ... nothing. I tried the RM2 on another mod, and it fires right up, so it's not the atty. Anybody have any ideas?