Hello all, I’m new to this forum, just picked up a 2000 CR250r, my first two stroke. The bike runs great, it screams up top, it hits very hard. But I’m getting tired faster trying to hang on when the power hits. Coming from four strokes, I know it will never have the same low end, but I'm willing to sacrifice some of the top end to get back a little low end. The bike already has an FMF Gnarly pipe, and a Boysen power valve cover, I know both are suppose to help low end. The previous owner told me it had a Pro Circuit cylinder head, will swapping out to a stock one bring back the low end power? Any other suggestions? Being new to two stokes, I’m not quite sure where to start.