I think it is easier to touch up the chain than to remove and replace
the chain.
The first time or two you may screw up, but after a little while it is
pretty quick and easy. Two or three strokes with the file per cutter.
I do have another chain. I just have never used it.
If you want to see the tree I cut down and the progress I have made
toward splitting it, go to
http://photos.yahoo.com/dlcaster57
click on the thumbnail photo to see the rest of the pictures. I have
just been splitting a couple of rounds per day.
Dan