Personally, I do my own wood for several different reasons-
1. I'm stubborn and want to do it myself!
2. I can do a LOT of wood for less than the commercial outfits.
3. I've seen some stuff stabilized by an un-named outfit that wasn't worth crap!
4. I'm stubborn and want to do it myself!
5. I can tailor different color combinations to fit what I want done.
6. Did I mention I was stubborn?
FWIW, I've done mammoth & oosik myself.....turned out fine.
Harry