Really great I like the tree removal part. I do have one question why can't I push over some trees, I can only seem to do the taller thinner trees?
The tree pusher on the D11 blade is based on the feller buncher. Some of the tree types in the maps are not meant to be cut down by the feller buncher and require a chainsaw. I'm not certain that is what you are running into but that is likely it. As a side not some of the bigger tree trunks need you to cut a little higher up from the ground so you could also try that. Do you mind letting me know what map and type of tree so I can do some further investigation, maybe its something I could solve.