Your throttle should not be on the left side. Every powered bicycle or motorcycle throttle is on the right. If it’s because you want your bike to be different could get someone hurt as a new rider that have rode other bikes and motorcycles would try to throttle up or down in case of emergency would instinctively use the right hand. When they realize it’s on the left side it may be to late. Maybe I misunderstood but you could be opening your company up for a lawsuit. Everybody sues for every little thing now a days.