I just bought a new bumper to replace my broken one and we're swapping the amber lights over and we can't get them in the holes perfectly. We've tried sliding it down the little rail, but then the fat side wont fit in. We've tried going in sideways then flipping, but it's too tight. We're trying to get them in there so there isn't that 1/2 inch gap between the light and bumper. Any ideas?