Two months before a massive blaze sent residents of 13Ten apartments jumping from balconies in the middle of the night, there were signs of trouble. DeKalb County officials cited the complex in unincorporated Stone Mountain for lax record keeping on inspections for fire alarms, extinguishers and the sprinkler system. A firm hired by the complex to test the property’s fire hydrants found that 14 of them had low or no pressure, according to documents obtained by The Atlanta Journal-Constitution. But DeKalb officials say they didn’t know about the issues with the hydrants — until they tried to get water just over a week ago.