Upon arrival discovered unit was not fully reassembled, capacitor was not put back in mounting bracket. Inspected heat exchanger from bottom side, discovered two corrosion points on the secondary. Inspected heat exchanger with camera through limit access. Heat exchanger is getting stress marks on steel but no visible cracks or holes. Performed combustion analysis on furnace during operation and no concerns were found, combustion report photo uploaded. Blower motor capacitor 5mfd tested at 3.06. Blower motor has very minor resistance to it, when spun by hand it stays spinning for about 15-20 seconds, motor doesn’t seem to be in concerning conditions to my knowledge. Replaced 5mfd capacitor with turbo 200 mini and set to 5mfd. Inducer motor has slight vibration to it but it is not a concerning amount.