WINONA, Minn. — Thieves made off with a haul of copper overnight from a ji  jitsu gym on the Far East End. Police were told the theft was discovered when a trainer arrived and realized there was no heat. Nine feet of tubing and 30 feet of wiring had been cut from an exterior air-conditioning unit, police said. The replacement value was pegged by the buildings lease-holder  at $3,000.