Thoughts...
Charging to full sight glass on a warm box will cause an overcharge situation. Charge just enough to have a liquid seal on the glass outlet and give the TXV time to pinch. This will back up the liquid. Let the box temp come down before you clear bubbles.
If you can't get to the suction line at the evap coil then use a temp drop across the coil. Good TD will be around 10*. If you can remove the side panel and take a temp reading of the suction line just at the outlet of the suction header. We do this if there is a rack under the coil that is not easy to move out.
Your pressures are a little high for your ambient conditions and 408. Look for 20# on suction as the box settles. If the box got to 30* then your suction should have dropped from 30# to near 20# or lower if your TXV is working properly and assuming all other components are in working order.
All of this takes time that you didn't have. I think when you go back to check the unit you will find a little overcharge and possible flood back.