Whenever I use the Gyneflex it rotates about 60 degrees within my vagina, always in the same direction. My only guess is that my muscles are stronger on one side or another? I constantly have to reposition it or just hold my hand such that it can't rotate. Has anyone else experienced this?

That's a new one to me! I guess so.

I have that problem too. I just hold it in place. I guess I had never thought about why it was happening.

Ditto to 'th'. I do have to hold it in place and wondered why it rotated.

Me too! The muscles on one side are just stronger, so it rotates to the weaker side. I have noticed I am more sensitive on the stronger side too. I just keep repositioning it so that the weaker side gets a workout too - hopefully the sensitivity will develop with the strength.