hello any member or modern can explain how to make a rfm for GSC EXTREME 1.21?. And as to assign the DRS zones Circuits f1, or I need some program for this, and can pass for my GCSE circuits 1.21, I would like to learn to put a brief explanation. we have a league with extreme F1 1.21 but no circuits to start 2015 season apply for help. Thank you