Energy suspension differential bushings thud

[Joey370Z]

So last weekend my rear dif bushing went out and I decided to get energy suspension differential bushings. After a few days or so now I'm experiencing a thud from the rear end anytime I put any torque on the rear dif. If this is the way it's going to be with these bushing then that's nonsense. It doesn't sound well at all and is very annoying to hear a thud throughout my car every time I shift gears up or apply throttle. Has anybody experienced this and how do whiteline bushings compare quality and performance wise.