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I don't know how else to explain it, other then it was Fn annoying. I have heard that there are different degrees of stiffness in poly mounts but I wasn't about to try a different style.
I replaced the rubber with poly in the stock mount. With this new motor I just put stock ones back in. I know that they aren't going to last, I need to find someone old school that knows how to set up an engine strap.