When I put the 922 amplifier on this tuner, it blew out the diodes.  Probable cause was too much reactance from the antenna when using high power (1000 watts).  Tuner works when running 100 watts.  Answer to problem is just more inductance on transmission line using a roller inductor (30 mh) because as frequency of operation goes down, the reactance goes up.  160 meters is a tough frequency to reach.