Had my rear wheel off to replace the brake rotor & decided to re-balanced my rear wheel. It had 3 oz on it & I've never used that much when I do the job. Whoever did the job before didn't have the weights at the light part of the rim but it wasn't very far off, like maybe an inch & a half. They also had them on the inner most section of the wheel so couldn't put it on the curved area of the spoke. Would that be a reason to have to use more weight if you aren't putting weight on the lightest part of the tire/rim?