FT-1000MP 80m pwr out low?

[WR3O@music-city.tdec.state.tn.us (WR3O@music-city.tdec.state.tn.us)]

Any ideas why an FT-1000MP only puts out 80 watts on 80 meters
into a dummy load with nothing else connected?  Only on CW & RTTY?
All other bands full output on CW into DL.  FM and SSB full output
on 80m into DL.  Tried diff cables to DL -- no diff.  Running out
of ideas fast.  Contest time near.  Any ideas?  Thanks, Kirk
/exit