Can anyone here help? I need to replace the cheapo rubber nolleen shocks that those of you in the know....know melt away when they got hot. I've seen these rubber carappy shocks replaced with springs as the shock is the oil damping system (ODS) by Girven so the spring replacement works out perfectly and actually better than the orig rubber crappy shock. So waht I need to know is what size lenth and diameter spring do I need to replace both front and back? Its the same bike pictured below but its green.