[Humble]

Dave nailed it before I could but yeah you should re-do the shoulder straps if you can. Also, I prefer a submarine strap (5 or 6 point harness) mainly because they help keep the waist belt from riding up. If you switch to a 3" belt you may want to get belt pads if you have wide shoulders. I'm 24" across at the shoulders and my 3" belts really wear on my traps.