Thanks ADRPK,
That first board is douglas fir, some times when it has been setting out in the weathered for awhile it can tend to gloss-up and darken a little so it looks like it has a finish on it.
I Try to be extremely picky about getting setup as straight as possible and not push the saw to fast, the down side is that I don't get as many boards per sawing session.
I hope to get the process refined so that I can produce more footage.
Happy Milling