certanly sounds  like a fret issue.. easily enough checked  with a  straight  edge.    if the fret is  high. it  might  have  raised  slightly. if you have a rubber  hammer  try  tapping  it  down.  if  that doesnt  fix  it  then  it probably needs  to be   filed  down  and  polished  in that spot.  ive  done that  plenty of times  on many guitars..   if you dont  know  how  best bet  is  to send  it  to someone  who does.another  method  of checking  it  is   to loosen  the string  .  and put the  point of a tooth  pick in the  nut to temporarily raise the  tstring  a bit  .. if  it   goes away then  the  fret is defenitly high.