I recently picked up sled from someone and just getting into this sport. During our first outing with it I noticed it was loosing coolant at an increating rate. Spark plugs looked great and after it was warm coolant starts flowing from under the motor. I noticed a couple spots where the lines are being cut into by the structure, but it looks like I may need to remove the motor to replace coolant lines. Is there any thing I should add to my list to replace while I have the motor out?