basically i put in a new rear suspension on my bike and recent ly its started to really creek when i go over bumps in the road. i dont think theres anything wrong wit it as its only been on there a month at the most ive tryed spraing wd40 on the ends on the springs as i thought it might be that but no change. any ideas?

need to grease up the linkages and swing arm spindle this means taking out the swing arm