Joseph Meehan wrote:

I am sorry, but there are not easy fixes and without a proper total

evaluation and correction, you will only be adding to the Rube Goldberg
system.

To start with you need to do a Manual "D" to get all the data you need
to figure all this stuff out. It does the math to get it right.

I also suggest that you will need a experienced professional. This is
an art form that needs the years of experience of finding ways of addressing
those construction situations that seem to defy doing the job right. Any
good professional will do the Manual "D" and I would not be surprised if
they wanted to do other "Manuals" to assure your HVAC equipment was up to
the task.


Right on Joe!