Well, finding fairly recent wood chips isn't that hard for me. I have a source, but the work to shovel them into my little Honda Fit and then push them back out onto the garden is quite tiring. If I had a pickup truck then I could just go up to the city green waste facility and they would dump an entire truckload of wood chips in the bed and I'd be on my way.

I still need to see if I can find some ramiel wood chips. I'm sorry to hear you're having so much trouble with your BTE garden. Do you regret doing BTE? I tried traditional gardening 1 year at our previous house and it was no cake walk by any means and I had pretty much abysmal return on my work.
What do you mean by "trying to keep the nutrition balanced in my soils"? Doesn't Paul basically recommend not using any fertilizer or additives except wood chips and manure unless there is a very extreme situation?
Is there anybody here that has had a good experience with their BTE garden?
Thanks,
Andrew