If you mean too fast as in the tempo's high, you can slow it down. Just put in t# in the beginning of any of the lines, replacing # with whatever speed you want. (Default is 120.)
If you mean too fast as in it's over too fast, well, yeah, I had to do that to bring down the rank to 8. If you want a rank 5 version, I can probably make one that's a little bit longer.