The springy side of your points shouldn't stay grounded when the points are open. Could be a bad coil. Could also be a short in the mount of your points. You didn't mention replacing them or the condenser.
Another couple possibilities come to mind quickly.
1) The primary wire between the coil and the points is shorting to the maf body. It runs through a narrow channel and chafed or broken insulation could cause it to short. Check its condition.
2) Either one of the two (inside and outside) insulators around the ground stud of the condenser could be broken with age or from having been tightened down too hard. Look them over as well.
Either one could cause your poins to be grounding when they shouldn't.
Just to add a third idea to go with the same thought, check out the condition of the insulator that the spring side of your points mounts to.
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