I didn't have an issue when I trial fitted an OMP frame, you sure you got them rotated the right way? But they are **** frames, as well as being silly low they don't centre the seat against the wheel. Send them back IMO as not fit for purpose, you'll be much better off using the Sparco one, it's a bit taller, plus it can be installed on top of the OEM sliders. So a bit of extra height again and also no need to buy universal sliders.