Well; let's think about this a little -
Water cooled design-condensing would be 105º. Air cooled design-condemsing would be 125º. You are at 101º. Lack of oil return may be low refrigerant flow / low head pressure / poor head pressure control. I would start with making it control at about 117º.
The SSH is too high at the coils. This commonly results from either insufficient subcooling or insufficient refrigerant flow despite having adequate subcooling. See paragraph 1 above. The TXV's are only so big. After you get the head pressure to 117º - get the subcooling to 10º if it's not already there - and see how the TXV's flow then. The TXV's may be too small but let's make them do as much as they can before condemning them.
BTW: Did you really say that you thought oil was logged out in the system somewhere - so you added More oil? <g>
Originally Posted by zuke19