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Apple limb bow question

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Gordon:
As long as the string bisects the center of the handle there is no need to make any corrections.

Lost Oki:
Another question from the inexperienced.  Apple wood does not seem to be friendly to a draw knife, I keep knocking chunks out of the belly as I reduce thickness of limbs.  I tried a small hand plane with the same results (see pic).  My thought is to just use a rasp.  Any other suggestions?

Second Questions.  Doing an inspection of the back of the bow I found 2 areas of concern. chunk missing around a old limb knot, see pic.  A 2nd chunk missing at another knot. Its approx 4 inches long, 1/8 inch wide an a 1/16 deep.  Do I try and take it down to the next growth ring or can I fill it with something?  see pic

Hamish:
Hard to tell from the photo of the back. It doesn't look like a tear on the back, but a natural furrow, lower than the surrounding area???

For tear out, on the belly, you can get a little chinese style wooden planes, that have a 60 degree blade bedding, rather than the standard 45 degree. The higher angle will eliminate  tearout. They also double as 90 degree scraper planes when you flip the bevel opposite side. They are quite affordable tools, and work well for bowmaking, and many other woodworking tasks.

 Shungee-Rosewood Mini Polishing Plane
      
   


In the mean time a rasp and cabinet scraper will get you to where you want to go

Lost Oki:
Thanks Hamish.  I decided to work on belly first.  Using draw knife as scrapper to thin limbs to get to initial tillering.   Scrapper is working great, spot on belly is gone.
I will look for the Chinese wood plane. 
Back; its definitely a tear.  double checked its 3 inches long, 3/16 wide at knot and 1/16" deep.    I will try to get a better picture tomorrow.
Pics, I updated current pics.

scp:
I would work on the back first. I just don't like the look of the tear. I might even consider making a backward bow, turning the back into a belly, without any stiff handle.

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