I can't seem to figure out how to get this chain brake operating. I got this saw and the brake band was chewed up. I got a new band and got this far but it seems like the spring is too long. Doesn't even seem like it's got room to bottom out. It functions all right without the spring in and makes an audible click, but as soon as I get the spring in it won't disengage the lock. The 2nd picture is with the lock engaged and it doesn't have much room to move.I'm wondering if at some point someone put in a longer spring and it was always locked and they ran it anyways. Was just going to get the whole assembly but I figured I could fix it myself.