Tech was informed living room a/h was hotter then the rest tech did find living room a/h was furthest from condenser once tech turned a/h by its self liquid line would freeze up but when tech would add another a/h head liquid lines would unfreeze tech did that to each individual head and each individual head liquid line would freeze if no other head was on tech added 1lb of refrigerant to the living room head a/h started blowing out 49 degrees like the others tech was unable to get temps below 59 earlier until tech added 1lb tech got approval for leak search tech found a faint detection on upstairs bed room head tech spoke with customer due to how faint detection and tech could not pin point location of leak customer would like to wait to see how long it will take to leak enough to have issues arise again when performing esa in 6 months customer would like leak search again to see if leak is more present