Does N1 trying to shake N2 needle underneath it means that I'm approaching said limits? How about EPR gauge? I noticed today on the same flight but with less fuel that I did not suffer these failures. I was again crossing from Vaziani UG27 to Batumi UGSB and my cruising altitude was 12000 feet and somehow as I was leveling off, the engine needles started to spread. I lowered collective and trimmed cyclic level with reduced airspeed until both needles topped eachother again. The red chevrons on the EPR were touched by the left yellow chevron halfway top from the bottom. Also I think there was a mismatch between oil temperatures.
I landed with the 270 liter light on and opened rearm menu to find my fuel is 1%. Average speed was 200-225 km/h.