I agree with quiltedsunshine that the forked pins are too thick. The ones I tried were Magic Pins. I like some of their pins (aqua head), but these didn't work for me. Luckily, they were in a trial pack with another style of their pins, so didn't waste a lot of $ to test them.
If I have a really fiddly intersection, I do better with two straight pins, one just before and one right after the seam intersection.