The thing that I find difficult with the fuel management is that whenever I open the Left and Right Fuel Crossflow Valves, while the Left and Right FWD and AFT Boost Pumps are ON, the fuel is fed from one tank, say the No1 Tank, for a while, then it will switch to another tank (No2), then the next (No3). It will cycle through this  until I either close the Left and Right Fuel Crossflow Valves, or turn the Left and Right FWD and AFT Boost Pumps are OFF. I've never found out if that is the way it happens in real life or not, but it seems strange to me.
:-/

In the early days after I got the CS 727, I spent a lot time trying to balance them better. After Lou explained what to do (as per the info I provided before), I have never had to worry about it. It becomes a simple case of the Center (No2) Tank feeding all the emgines until it is roughtly equal to the Left (no1) and Right (No3) Tanks. Then turn on all the Boost Pumps, and close the Left and Right Fuel Crossflow Valves.