I got 8 packets of Sugru from Amazon a few weeks ago. I used some to fill in the low spot on the right side rubber CZ-75 grips I've been using for years. The idea was minimize the effect of the high point under my trigger finger 1st knuckle so that I'm not struggling with putting it on top of, below, or above the high spot. Final position of the knuckle affects the natural location of the trigger finger on the trigger. I built up the 75 grip instead of trimming the bump because I tend to insert too much finger in the trigger when I don't put the knuckle right on the high point.
I will shoot it later today, and probably add some more Sugru above the high spot tonight.
Joe