Wally may be right on this one. Look at the insulator lug which goes through the side of the distributor housing
Make sure the connector ends for the points and the condenser are not bent over and close to touching the distributor housing. They may be pushed on when the cap is put on. they can look ok(the connections) but make contact or almost when the cap is on with the edge of the cap pushing them down.

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!