I'm starting to remove the wheel weights on my 1650 Quietline and, having never done this before, thought it best to ask if there's a particular method I should use short of prying or hammering. Have removed the attaching bolts but the weight is still firmly stuck to the wheel. I tried threading a threads-all through the weight's center hole so as to bear on the axle but the rod wouldn't go much more than an inch or so. Dirty threads?