its probly cause youre progressing, so youre spinning faster, then once you land like a 7 that youve been working on for a while, thats all that youre gonna do cause you just learned it and you wanna show it off so you do it all the time. that kinda happened to my friend, he was trying for a 7 then he finally got it, and only did them for like a weekend or 2. then he went to 3 a big table, and almost got severly worked cause he hadnt spun one in so long, and his speed spinning was off