Progasm feels like its overshooting prostate, help?

I purchased a progasm classic about a month ago, its my first aneros toy but I’ve had plenty of experience in the rear so the size wasnt too intimidating. I have previously enjoyed manipulating toys to directly hit the prostate so Im quite aware where it is positioned in my body. But I feel like Im either using the progasm wrong or its overshooting the mark and not hitting my prostate.

Ive done research on how to properly manipulate it using the PC muscles, and I can certainly feel it moving around in there. However I never seem to get anywhere near the same intensity of pleasure as when I use a normal insertion toy. I suspect its hitting above where my prostate is because i can pull the progasm down and then its akin to using a regular dildo. But that defeats the purpose. Any advice? Is this a regular occurance? Is there any kind of workaround? or did I just choose poorly with the toy…