and that shakiness is affecting handling more than you realize I'm sure, its not a good thing, LOL........after being shown how to glue, I must say my first set I did are pretty smooth while on the box under acceleration, take your time, trim things right, and just pay attention to what you are doing, it takes time until you have done it a million times I'm sure, but I think you can use some sort of a clay compound on the inside of the wheel, Im not really positive, Mike C can give you the low down on this topic