You can use an old points plate with a 1/2“X13 nut welded in the center to ease the cover off. Mount the plate inside the cover as you would normally and insert a 1/2”X13x3“ headless bolt in the center. Turn it in until the cover comes loose. This way the #2 cam stays in place so they don't all fall out when you remove the cover.

Cam Cover Removal Tool 1)