Saw slid off tailgate a few days ago and hit "just right" on the frozen ground and cracked the fuel tank. I disassembled saw so I could get at crack and plastic weld it shut and extra seal with JB weld. Repair worked well but in putting saw back together today I'm having trouble with the darn chain brake assembly. It really can only go back on one way (I think). I changed a saw chassis a few years ago and had no troubles. But maybe mine just sat in bench for too many days and I'm forgetting something. When I assemble it all and go to hook up the tension spring it appears to be stretched too far thus pulling the brake handle all the way forward and it will not "SNAP" when acuated. Any ideas what I'm missing or maybe theres a schematic I can look at ??