Mary K. Greer's Yes/Maybe/No Spread

Eruantal

Confused with this

Hi, I tried this spread yesterday and today. At first, I asked the same question twice, and I got the wheel in the exact same position, which was impressive. The other cards were also relevant to the situation. But today I wanted to check, like I read that some other ppl did in here, and I asked if I will go to work today, which is 99,9% certain that I'll go, and the wheel was in the maybe no position -weird. And then I asked a different question twice, the first time the answer was a definite no, and the second a definite yes. Don't know what to believe..