My parents have a huge oak in their backyard, it has to be 150 years old, they had a man that said he was 93 years old and when he was a boy he would swing from that tree and remembered it to be a big tree then. Any way my point is the health of this tree is deteriorating, getting some rotten branchs. It also has those little balls growing on it, I have heard that is an oak disease, I will do some more looking to find out more. I wanted to see if you guys had any recommendations.