All my DNAs 2 (20s) and 3 (30s) tend to lock into a ohms reading and sticking there. If I change the rba to a different ohm the screen keeps reading the old RBA resistance. The only way I have found to correct this is a hard reset, disconnecting the battery. This is a PITA as all my mods have the batteries permanently installed with on board chargers. Does anyone know how to do a reset without removing the batteries?