YEP! I thought I was the only one. When I first started skull crushers I HATED them. They felt aqward and did nothing for a pump. and would leave my wrest and elbows with like a popping twitching feeling. After awhile my arms got used to them and havent had them again. But that is common. But you are the only one other then myself to talk about the splints in forarms when doing curls. For a long while I felt that when i was doing barbell curls that my forarms where going to break. Like i though i might have had a small fracture or something. It did feel much like a chin splint. Havent had it a lot lately...kinda just stopped but i had it for about 3 months. Such a wierd place for a fracture though. I am interested about it as well. I figured though thats what it was because it hasnt came back and feels like it "healed". No one knew what i was talkin about either.