[Elecraft] 160m alignment quesion

[Robert MacKenzie]

  I noticed today that my K2 is peaked for 1.900 mHz, or at least the background noise gets loudest when I tune there. I would like to peak the noise for 1840. Is it worthwhile  to do this peaking? ( I use the CW end of the band most often.)  Should I go through the complete p. 77 alignment for all bands if I realign this way for the 160m band only? 
  Thanks, Bob VA3RKM