While flying level at about 15,000 feet with heavy loads ,my engine core RPM always goes around 95% right up to the yellow band zone where it shouldn't be. In manual the yellow band should be 100%-102%,which is correctly marked in the old cockpit by the red limit line, but in the new cockpit the limit looks like starting from about 93% instead of 100%. 95% engine core rpm is in normal range but it's already in the yellow band area of the new a-10c cockpit,which made me feels like I'm going to blown up this engine