I have a refurbed P7M8 and it is really a great pistol that shoots and conceals very nicely. Here is my problem; because of the smooth areas on the back-strap while shooting, the pistol has a tendancy to twist in my hands effectively changing my grip. I can stop this by taking an extra firm grip but this is not a natural grip for me and requires extra concentration. Has anyone else experienced this phenomenon and if so what measures were taken to counter this effect?