Tire balancing takes a lot of patience but forced if I buy anything but AKA not perfect but decent. The dubro unit is awesome very sensitive. Having your wheels / tires stop in random spots is a science would rather pay someone too take away this frustration. All the youtube instructional video are not for the extreme RC enthusiast its basic but a good point would be foam seating and glue job will affect balance .NEW foams from Proline are awesome.