Recently purchased this truck and I have no intention of driving it daily but I do intend to restore it and haul wood in it and a weekend driver. For the most part everything seems to be working fine. I am curious though on the drive shafts both front and rear. It has a 6" lift on it but I have no idea if the drive shafts were lengthened or just maxed out, is there some way to tell? I've read up a bit on "balancing" a drive shaft, is this truly necessary?