I believe that i have same problem. Not with my unit at the monent, so can say for sure. Can you change these paremetrese with new editor or do you have do it on the unit?
You find Output Sources in the Output Section, in the user interface of the RPOFILER as well as in Rig Manager 3.0. Delay Mix at 100% (Wet) can also be dialed from both ends.
If you should still be facing surprising delay and reverb effects, check the DLY + REV Routing in Rig Settings. The default position is 0%.