David Wilcock 's final moments are even more tragic given what he was dealing with behind the scenes ... 'cause cops tell TMZ he was battling serious financial and health problems leading up to his death. Law enforcement tells TMZ ... Wilcock made a disturbing 911 call Monday morning, telling dispatch, "I need to leave" and "I will be to the left of the house," while also opening up about ongoing money troubles and health issues. He refused to say whether he was armed or planning to hurt