A legislative audit of Governor Jesse Ventura's state-paid security for his book tour has touched a nerve with the governor and his wife. Ventura got a copy of the auditor's letter yesterday, and last night WCCO television played portions of a voicemail Terry Ventura left on Republican lawmaker Carol Molnau's answering machine suggesting the first family might cancel all of its security. Republican Representative Dan McElroy chairs the Legislative Auditor's commission. He says the first family is overreacting.