since we are talking a possible wheel issue then if you find the wheel itself needs lots of weight a machinist cab "drill" away weight to balance .....
Hardly worth the trouble and money since aluminum weighs 1/4 what lead does. you'd have to remove 4 times the area and would be a lot of holes. Just slap a weight on the center of the wheel and leave it forever.
My rear wheel was balanced within a 1 ounce without the tire.