I'm at home now and with a larger image, that stylus looks ill fitting to me. Might just be the mounting screw heads in the way. I don't screw head side down - only head side up.
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In any case, it looks like the cartridge is an ADC 660. Good chance you need a new needle. Only way to tell for you is listen to it and if sounds horrible or just won;t play a record then you do.
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Look into stylus cleaning methods as well. I've had more than one that were caked, absolutely caked with dry crud but cleaned up OK. If you need a vendor, there's probably at lease one in the US with a compatible stylus.