Unsuitable saddles. Unfortunately, this is often what the gel prints look like.
There is a pressure somewhere, which you can usually recognize as a trainer or rider in restrained movements/shortness of stride/pressed back/low withers/unwillingness to move etc..
I have often taken double measurements to check the gel print measurement, and the results have always remained the same to date. Incidentally, even a western pad in between does not change the incorrect center of gravity.
