exhaust hose crease - crimped

I have an 89 supra with the 351 Ford - PCM engine. A couple years ago, I had the exhaust hoses replaced. One side is creased and I am concerned it may be blocking flow. It isn't completely closed or anything, but still concerned.

Now the engine seems to run just fine, but has kind of a (well not really a vibration) but more like some kind of thudding low pulsing kind of thing going. I am wondering if possibly the exhaust isn't going out equally on both sides and perhaps causing this effect.

Does this sound possible? Should I be concerned about the exhaust hose?