Go back to post #37/45 on the other thread.
Go to your outdoor unit and remove the white envelope.
Cross the information that the tech gave you and you will see in black and white that it is not charged correctly.Your head pressure is 85 psi to high.
Your duct system may be leaking but is not the cause of the high head pressure. this is an instalation issue.
Demand to Trane that the FSR do a site visit and do not take no for an answer.