I'm new to this forum so I'd figured I would give it a shot.
Today I repaired a leak on a unit and replaced the filter drier (leak on a fitting in the condenser). When I charged the unit with the factory charge of 7lb 8oz (as per nameplate) I began to check some Temperatures and pressures. I was receiving a suction pressure of 95psi and a head pressure of 180. I thought at first it was my compressor valves (tin can recip) so I covered my condenser coil and saw my pressure raise. So I new it wasn't my compressor, I checked the second stage which was working 2 weeks ago when I performed maintenance and it was having the same issue with the pressure. So the issue I believe is related between both stages.
Here are a few numbers that might help
Suction - 95psi
Head pressure - 180psi
10F over Evap coil (75-65F)
5F over evap coil when running stages one at a time (75F-70F)
10F superheat per stage
No temperature rise over filter driers
If ante has any idea that would be great.