how much abuse can 30 spline axeles take changing my ring and pinion to 4.30s has a 30 spline spool with factory axeles noticed the ends of the axele splines are starting to twist so im going to replace them with doctor diff axeles do i need to buy a 35 spline spool and 35 spline axeles hate to buy another spool . 2800lb Duster 600 hp give or take 3800 stall