Jack , Thank you for the help with the gasket for the 20mm kiehen copy. Great customer service ! I have included pictures of my two bikes to post on your site. The CT70 is 85cc with an 18mm carb and many other parts all purchased from you . The black bike is a 1998 Jincheng Monkey with 72cc bore kit and 20mm carb (carb not on bike at time of picture) also purchased from you. Thank you , David