Hey,Redo the pressure measurements tonight when the temp is similar to last night's temp. If the readings are similar, then add refrigerant until the low side reads 45PSI. You will need to close the low side valve multiple times while adding refrigerant to ensure that you do not overfill the system. Review the post 23 instructions before starting the refill process. If you have any specific questions, post them.
I did the pressure measurements again, the outside temp was 88F (3 degrees more than yesterday), and the the low side was about 4psi lower (36psi) and the high side was about 10psi lower (121psi).
When I went to autozone to by the refrigerant cans (12oz each), the guy at the counter said I should vacuum everything and refill fresh. I would appreciate your feedback.