A couple of dumb tire balance questions..... For the rear slicks (36" or 34.5") on bead lock rims, what is the best way to balance, and is balancing really necessary? Bubble balance, or dynamic spin balance? I might have an opportunity to buy a used spin balancer at a good price. Will most spin balancers handle these big tires/rims if the hood safety switch is rigged to let the machine work with the hood open? Lastly, do people find that these tires/rims generally stay in balance once initially balanced, or does the balance move around at all with use? Thanks.