Johnny,
‘I also think that the Paccekabuddha is not inclined to teach’…that is what I meant by (it is)’not in them’ to teach.
As to the second question: Is it given that a Paccekabuddha receives alms in the first place? If he does it will be in return for giving moral teachings. If not, his means of making a living will be a proper one. I do not know. So like yourself I will wait for an answer from one who knows.
Metta