In this first of a two part series, WERA racer Charles Strong was shredding tires at a recent WERA West round in Las Vegas. He asked track side tuner Dave Moss of Catalyst Reaction Suspension Tuning to have a look. Dave found that Charles was over riding the rear spring, which had too much preload to allow the shock to work properly. Follow along as Moss explains how he could tell what Strong's problem was and what he should do to fix it.