I know alot of people like to ride non symmetrical at true center and i was once one of them. but if they wanted you to mount them in the center they would have made them symmetrical. mount them at least 1 back. you will have the easiest time turning back alil. Even pro park riders dont ride center mount if they ride a directional ski like the ar7. i believe thall rides his thalls and pipe skis at 2 and a half back, even tho his pipe runs are almost half backwards. hope this helps
thewhiteroom