On take off, when I pushed my No1 Engine thrust lever (along with my Eng 2 thrust lever), the No1 Eng would spool back down at about 85% N1 back to idle, after normal spool up before 85%, while Eng2 would continue to spool to take off N1 %. Once I had taken off (with about 10% N1 thrust reduction) I was able to enable auto thrust, which was then able to spool up the engine to take off N1%. In cruise, the engines are working perfectly with auto thrust armed. This hasn't been an issue with my Thrustmaster TCA Airbus thrust quadrant before.
Anyone know the reasons / how to fix it?
Thankyou!