ORIGINAL: Cyberwolf
Well you run your tanks anyway you want ,I'll put mine on centerline of the spray bar thank you.
You can always do what you wish.
The point being that in many cases where the centerline position is being looked at to cure engine running problems, there is usually something else at work causing the engine to run unreliably.
e.g. the engine tuning must be looked at.
The variance from the spray bar centerline is often not that far out of spec that there should be such a dramatic difference with the engine sitting on the ground and running it up.