NetFlow eval questions

Hi! We're also evaluating OpMgr and I have a few questions/problems on the NetFlow side of things.

First, I haven't really noticed how Netflow integrates in to OpMgr. Does it add links to take you to the NetFlow app while viewing router info/etc? I've configured OpMgr \ Admin \ Add-on Integration for NetFlow, but nothing. Not a big deal - we just bounce between the two.

Can you control the scale of the Y axis in graphs (similar to the way OpManager adjusts the scale). e.g. a router with low utilization (very low), it's barely noticeable on the graph. Minor minor thing.

Bigger issue:
We can't get NetFlow to show the serial interfaces for most of the routers (it shows for 3 of them, but not the other 20 or so). My router admin had to circle back and configure netflow on those serial interfaces, but they still don't show up. He also swears he never specifically configured it on the 3 that are working.

I think that's it for now.
Thanks!!