If your lines are hitting the transom I am wondering if your motor is too low.
Mine was the same way when I bought it and is also a 2003 model with a 6" plate.
When I bought it the bleed fittings had been hitting and scarring up the alum angle that is on the edge of the transom. When I measured my motor height it was like 5" below pad. so I raised it
Check your prop to pad I am betting your motor is way too low.