Hello, my 86 kl600 is backfiring alot and stalling out. I'll pull over and it will start right back up and run great to near max speed then... same thing. Bike sat for a few years and I'm just knocking off the dust and am a intermediate shade tree YouTube mechanic at best. I pulled the exhaust off and I have a slip on pipe that I may try but I'll need a coupler of some sort to make it work. Or I can use the stock old AF exhaust for now. Any way the copper gasket has a mm ding in it and I guess is the culprit. Bike only has 12k miles but I got it at 11,300 mi 5 years ago. Put 700 on it and then it sat in garage since. Already damn near went over everything which has led me to this point. Can I use part # 11060-1108 on the 600? It's the copper gasket from the 650.