rh #5 turnout ---9"st--- 90-18%rad ---4.5"st--- 90-18%rad ----9"st--- Lh#5 turnout. I need to end up with 9"st in the mid for a ez crossing gate between the two turnouts. do i use a combo 15% 18% 22% rad's 9" or 1/4 pic's?. Is this poss? Thank you. PS: ez n/s