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Flow in Channel Is Lost After Passing Through a Cross Section

Hello, I am having an issue with a sewergems model where flow is disappearing after passing through a cross section. The model is attached to this post for viewing. This post relates only to the Existing Conditions (EG) scenarios in the model. After running the 2-YR (EG) scenario it can be seen that the maximum peak flow in Channel CH-26(1) is 21.80cfs. This flow is expected and is what I would expect it to be. However, after passing through CS-34, the maximum peak flow in Channel CH-26(2) is shown as 16.05cfs. This decrease is not expected and there is not a lot of flow being added to the system from CH-28. The expected flow in the channel would be 22-23cfs. If someone can take a look at this model and let me know what they think is going on here that would be very helpful.

8540.New folder.zip