Gidday,
Yes the fuel balance for the Lear can be a trial, I operated 31s in the pure training mode and in the early days we didn't have a Sim, so all endorsements were done "live".
Most of us got a fright or two when things were busy doing "failure" work.
As you slow down the aileron required just runs out, student miss control can hide the initial onset as they use rudder, then it all runs out at the same time.
Mr Garrett's spin up has saved the day but if it is actually shut down, the ball is difficult to play for sure.
Stay safe.
