psychoanima I did see this post about a month ago :P
I implemented scaling animations in the next beta, so you should be able to try that out soon.
I will implement the second suggestion as well as it sounds sensible, but I have a question. You say you changed the step to 0.04 seconds to achieve 25 fps animations, were you using Step Animation Mode as well?
I ask because if you don't and the Animation mode is left at default, the step value is not applied at runtime. Or did you just set the step to help with the preview while editing?