Two days before a King County deputy sheriff's live-in lover allegedly shot and killed a convenience-store clerk, he used the deputy's handcuffs and gun to rape a man in their Kenmore home while the cop slept upstairs, according to police reports. The incident in August is one of many revelations regarding King County Sheriff's Deputy Ferenc Zana's disastrous affair with a mentally ill felon. They were contained in more than 900 pages of documents the Sheriff's Office was forced to produce Monday under a court order obtained by the Seattle P-I.