ok, I typed this whole long thing out twice and it's not working. So you get the short version.
spanx higher power. keep rolling down about an inch. any way to stop this, or is it just because I'm short waisted and have an opera singer rib cage? they aren't too small anywhere else, and a bigger size wouldn't do their job.
I found this with my higher power ones also. I did not find this the case with the power panties, that you can pull up as high. I also thought the power panties suck you in more. You might want to check them out. HTH!