If you have Dishpro setup, the likely cause is horizontal/vertical TPs.
The P0RNS are on vertical TPs. The PPVs on Echo 8,10 (110W) are on horizontal TPs.
If you get the P0RNS and not the PPV then you have the answer.
Go to lyngsat*com and get frequency for Sat TPs. Then in channel scan menu check each manually but for each horizonal subtract the number of the TP from 25600 and change it to vertical. Note: Lyngsat lists TPs as L or R as opposed to H and V. L=H and R=V (or vice versa?)
In summary, manually change each horizontal by subtracting its number from 25600 and changing it to vertical. Its called bandstacking.