Asking for a friend who does apt. complexes about the DR Converta Mower. This is a commercial 48 dual hydro floating Z rider with a 17 twin Kohler that converts without tools in seconds to a WB. I know DR is generally homeowner stuff but he says DR claims this is commercial grade and they have LCO's backing them up. According to DR you just press one lever to convert to WB. Anyone seen, heard about or used one?