There have been some issues with the Trumpeter kit since it was released in the early 2000s. Issues I recall right away are the bumps on the inner surfaces of the track blocks and the left face of the turret (right lower edge if you look at it from the front should be parallel to the ground, but instead it cants upwards). An easy fix if you have another Abrams kit handy (like the Tamiya kit) and can trace the face onto a piece of sheet styrene and add it to the Trumpeter kit. I've fixed it on one kit and left it alone on another.
It is a tricky build, but when done, it looks like an Abrams. For detail and accuracy, the newer Dragon AIM and SEP are the tops, but the Tamiya kits are better for ease of assembly and fit with the newer kits more accurate/detailed than the older ones. The Trumpeter and older Dragon Abrams kits are still a good value, but are much more involved builds due to fit issues, seams and mold marks. Definitely not box shakers!