Here's something I can do ~ if you ever took the mavis beacon typing tutorial, or used it to teach others, it has a random letter generator ~ spits out nonsense words. I can type them as fast as copying anything else, or typing on FR. One of the reasons was that practice typing numbers because that random generator throws numbers into the mix.
My kids were encouraged to type by them watching me BEAT THE MACHINES. They do great. Both can barely print or write.
I'm slower than molasses when it comes to copy typing - but my fingers just fly across the keyboard when doing my own stuff.
I hated typing class in high school because it was on a manual machine and I had been using an electric at home for about 3 years. I barely passed the class due to lack of speed.