I am going to go look (hopefully) at a used 046, what should I look for that might be signs of trouble. I am going to check compression to be sure it is around 130 psi, I would like to pull muffler off to look at the inners but I doubt the seller will let me do that. He said I can try it out at his house before I buy and the only reason he is selling it is his kids got him a new 460 for fathers day. He said that the saw has been gone through and been "woods ported" not sure what that is. He is guessing that the saw is about 17 years old and he always ran premium fuel through it. I do not want to doubt what he tells me, I just want to know what I should be looking for on the saw that might turn me away. Oh, he is selling it for $350.00 which seems like a good deal, I already have a 460 but why not add another one to the collection.