Hello All. I need some help. I bought a 1993 YZ250 that I am rebuilding. There is a nice Steahly flywheel weight that came with the bike, but it will not budge. The weight doesn't have the center nut, but the two 1/4-20 holes. I built a nice jig to take the weight off. I have used everything in my arsenal to try to take the weight off, including an impact wrench, which only bent the 1/4-20 screws. I am thinking that the previous owner used kryptonite on the threads. I haven't figured out a way to put heat to it or any kind of penetrating oil. I am hoping that someone smarter than me has the answer. All answers will be tried....twice.