Today I did a repair on a 4 ton system. I added a 35/5 cap. Then I performed a maintince on both. Both system test in tolerance Super heat 15° Subcool 10° New filters/ clean condensors Motors all test in tolerance the compressor could use easy starts to reduce inrush by 75%. Reducing wear and tear and service calls 📞. TD is 20 on both. System are now back online and ready for cooling