Real bad engine shaking.
You could have bought second rate mounts also.

If I was going through mounts that fast, I'd check:
-Valve adjustment
-IP Timing, Chain stretch
-Injector Service

Most of these cars have their original mounts in semi-decent condition unless they've got oil or fuel leaking on them. Good luck, I'm sure its not fun to replace those more than once in such a short time span.

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