Be careful when you change strings... my own preference is, when a dull tone or worn-out look makes a change necessary, to buy a set and change the lot, but one string at a time.

To my way of thinking, it can only be bad for the bridge and neck to remove all the strings at the same time: the tension release must move things around. Doing them one at a time limits the tension change. You can always work round with a duster to get the headstock clean if necessary.

Anyone have views on the new coated strings? I now use Elixirs and they certainly last far longer than the uncoated Martins I used to play. I like the sound better, as well.