I am a noob to carting and need help on rear springs. I purchased a 2001 EZGO TXT last fall with a rear seat. Please understand alot of work done to this cart is not quality. The cart is lifted the rear with long shackles and the stock shocks. I know from looking around the springs need to be heavy duty. Should I use a 4 or 5 leaf spring??? This cart will be used at a campground only.