Interesting. Yesterday, I got 818 when I first did it, hand on the table and tapping the "L" key on my desktop computer really hard. Then someone posted to use the space bar, so I concentrated and got 854. Then up and down from 824 to 871. And it started to get progressively worse, so I stopped.
15 minutes ago, I did it again and was getting consistently in the 850 range with a hard tap right into the space bar. So I did double time (R-L) and got 0! Then I did off beat and got ~850. That seemed to be my best no matter how hard I concentrated. Then I kind of swung my finger at it with my hand on the desk and it went into the 860s. Next, I just tapped lighter with my hand on the desk and it went up to 882. It kept within 860 -880 consistently. Then I picked up my arm and tapped lightly, like my hand was in a cast and all of a sudden I got this! Now it's 880-910 range consistently.
If I get 950 can I get a balloon?