How do I get the harmonic balancer off? I have a 1980 280se Euro W126 with a M110 motor. The bolts sheared off and need to be drilled out. I cannot get the balancer off. I see 2 pins do they need to somehow come off? or should it be able to be pulled off with them in as I do not see how to get them out. Thanks for any help as I am very frustrated!

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Currently
1991 Mazda Miata 174000
1991 Subaru 189,000 Winter beater

got rid of:
1984 VW Vanagon 195,000
1976 350SE Euro 185,000 KM
1973 280SE 4.5 (boy do I regret that)
1980 280SE European W126 4 speed manual (miss it)
1989 BMW 735iL 119000 (good riddance)