Hello, has anyone out there fitted a pro circuit langage arm on to an rm250 '05 model? I am considering buying one and dont want to waste money on something that doesnt really work. I do a large variety of riding mx tracks both hard pack and sand, trail rides, flat track tt's a bit of everything really. Just really wanting some feedback on them, so any feedback or advice would be much appricated. thanks. by the way the bike is already sprung of my weight and all that.