I have a 1996 zrt800. I just had the carbs done, new stator, new center piston. I ran great for about 1 hour then it suddenly shut off running at 70mph. I pulled on it and it started immediately, but now it backfires once in a while. When idling, it sounds like it's missing on 1 , but when i remove any of the plugs, they all drop the rpms the same. Under power it feels weak, with a top end at 2/3 throttle of about 60mph. Any suggestions? I hate the thought of dumping more money into it this season but oh I love that acceleration!