Sorry, not sure what you mean here - you have TRS connectors on your patchbay but you don't think its actually a balanced connection?
If that's the case, only pins 1 and 2 should be connected on the TRS connector of the patchbay. Alternatively, and less commonly, pin 3 could be running to earth also. Either way, it shouldn't matter if you use either a TRS/balanced or TS/unbalanced connector.