My property got hit in a big fire. Lots of dead standing oaks to deal with. The tree cutters quadrupled their prices so I'm stuck with the dangerous task myself. Graduating from YouTube University, I managed to cut down a number of trees, but there are many so contorted and known to have rot inside causing unpredictable falls. In these situations, I wonder if there is another way. Chaining/winching the tree in the direction of the fall is essential but perhaps use heavy equipment to add force, to flush out any weirdness? So make the wedge, then do the big pull. If the tree resists, go back and do the cut.