Depending upon the value of the weight I would not remove it. You could rig the drums up on a whell balancer to check them or possibly remove the weights and have the drums rebalanced by lightening. Certainly I'd be carefull with the second idea as its hard to find a safe place to drill holes that is far enough away from center to have enough effect. Probably the best solution other than disc conversion would be to move the weight to the outer circumferance of the drum. Caution here thow as well because you certainly don't need to have drum weights go flying off from centrifugal force. Hope this helps. DANA aka orphanautos