go to www.gsp9700.com and do some study. There are many downloadable articles there that give maximum runout specs and all sorts of information. .026" doesn't sound like too much runout to me.

Are you using balance weights inboard AND outboard? If not you will very often have a vibration. Weights ONLY inboard as the wheel shops like to do only provide static balance which means that the wheel does not hop up and down. If you do not have a proper dynamic balance the wheel basically "wobbles" which transmits lots of vibration into the car.

Best of luck,