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Boiling longer seems like a decent option. Once I can afford more propane I will try that, along with a longer boil on the bone. That will usually soften anything else. Man these birds were tough lol. They were tough in the way the acted too lol.

looks like a grinder is in order for us.

The trick is also to simmer gently rather than boil furiously

yea i did that on the 3 hour boil

grinding it was the move :)

Excellent!