Tech found rtu 6 s#481D had a leak in evaporator tech added 2 leak freeze to each circuit system has 2 circuits and added 1lb of 410a to circuit 1. Tech let system run while working on others when tech returned tech did not pick up any more leaks with leak detection at this time. Rtu 7 s# 463D tech opened evaporator coil cabinet to perform leak search and picked up a major leak instantly. Upon further inspection tech found both compressor low of refrigerant enough to indicate leak was snot small tech does not believe leak freeze will help with this system. Rtu 8 s# 475D tech found circuit 1 completely void of refrigerant indicating leak is major and leak freeze will definitely not have any effect. Tech spoke with Daniel Informed him of new findings he instructed tech to not add any more leak freeze and he will go back to his leadership team and relay the findings and call back when they decide what they want proceed with.