If you plane snaps when you pull the elevator then there might be too much throw or its just that the plane has bad flying characteristic. Try to put in some EXPO (30%-40%) and tame the plane down by making it a little nose heavy until you are used with the plane. Also try adding some washout on the ailerons ... 1/8". Try and then see ... also ... loops faster to try and eliminate the tip stall. Happy huntin'