It has come to our attention that some of the carbon arms in product Quanum 680C were misdrilled causing the motor mounts to be at a slight angle.
We apologize for any inconvenience this may have caused. Quanum is a flagship product that has quality first in design. We are arranging new carbon arms tubes to be sent free of charge to all who have purchased a Quanum 680UC.
Future orders for this item will not anymore be affected. Please contact us for further assistance.