They basically just replied that I should expect "some rattle and noise and vibration in that model" considering what it is.
But for me it just freaks me out to cut anything other than the lightest cuts on the smallest tools because it sounds like it will just plain break eventually. I don't really know what effect it has overall because I haven't measured the results - but I probably should.... (try and document if there is any difference in the quality/accuracy of operations when this is occurring under decent/heavier loads)