Came out today to re level an outdoor unit for a mini split. I recovered 4 1/2 lbs of 410A. Disconnected the line set and removed the pad. I cleared out any rocks that were under the pad and compacted and leveled the dirt. I placed 4 paver stones where the pad will go and placed the pad on top. I did have to use some cork squares to make sure the system was perfectly level. I reconnected the line set and pressure tested with nitrogen. I let the system sit for a half hour and the pressure was still holding. I released the nitrogen and began pulling a vacuum. I pulled the vacuum to 500 microns, closed the valve and began charging the system. I charged the system with 5lbs of 410A. I checked both systems and they are operating properly at this time.