newbie here - I'm trying to rotate an object - I can rotate it no problem in object mode, but when I set the keyframes and play the animation it wobbles. I tried uploading the file but it's over 200MB :(
I think you are rotating using the local axis in the top one, and the global axis in the bottom one.
To solve your problem, use the local axis when keyframing
So in order to rotate around say, the x aixs, instead of RXmove mouse, use RXXmove mouse