hi to you all this is my first post on this forum and need help with rolling 2 stroke exhaust cones i have just bought a slip roller thinking it would be quite straight forward but as normal it never is i have downloaded a cone design program that lets me print of flat cone formats to draw onto mild steel sheets and is quite easy to use its just rolling the things i have tried and tried but mostly the end up going spiral shape mostly the longer ones the short one are quite good . its starting to drive me mad now so can i ask is there anyone that can point me in the right direction as to what i am doing wrong or even a tutorial somewhere i can watch to se how its done many thanks triggers