These are the latest files I have for the Captain Sim 727 Series that I used to install them:

csp721_2300.exe - 727-100 Base Pack
csp722_2300.exe - 727-200 Expansion Model
csp723_2300.exe - 727 Freighter Expansion Model

It is best to install all of the 727 Models with SP2.3 or you are likely to run into incompatibility issues. If you bought them all from the Captain Sim Store or one of the partner stores that give you the files above (I bought some of my CS products through The FlightSim Store) which are the same files as CS delivers. You will qualify for downloading them through the Extended Download Service. Update them all to SP2.3 and see if some issues still remain.

Mark