I just picked up my first DSLR today, D90 with SB-700 , Tamron 90mm Macro and the MB-D80 grip. The problem im having is that after 4 hours of charging the battery i tossed it into the grip and got nothing on the display but a dead battery,so i tossed it in the charger for another 5 hours and nada, hit up Google to find this is not a rare problem and a solution. I have to back off quite a few threads on the locking wheel to get it to work, effectively causing the grip to have some shake and rattle, I couldnt find anything better then that, any solutions out there to get the grip to sit tight and not get the dead battery syndrome?