Ok thanks, I would figure 400 was too high but I'll try that.
Temperature isn't critical here. You're not aiming for a perfect medium rare or juicy turkey breast meat. Any temp from 300-400 will cook the pork bones. The higher temps also add some caramelization (deep browning) for added flavor.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan