[TenTec] TEN-TEC 525 ANALOG

[JOHN H. LEWIS]

Folks, please help me with a little problem I have with my 525 analog.  
 
I picked this up some time back and it seemed to work OK.  I made a good contact on 75 meters.  I moved my shack to another room and this radio sat unused for about 6 months.  I decided to hook it back up ...and got poor audio.  I checked my antenna with a visual inspection from the ground, and all appeared well.  To shorten the story, the problem was with the antenna.  The center pin had pulled out but I couldn't see this from the ground  .....but no problem when I saw the lead-in lying on the ground a few days later.
 
But, before this discovery, I took the top and bottom covers off of the 525 and loosened and retightened all screws ...and unplugged/replugged all plugs I could see.  Now, I thought the little 525 was OK  ...but the 75 meter band is requiring reception in the reverse mode (SB-R) instead of normal (SB-N).  The 40 meter band is not quite up-to-snuff either.  20 meters is great!  Did I replug something wrong?  I think I unplugged/plugged each, one at a time. What the heck is going on here and what is the remedy?  Help, please.
 
John-K4KAZ