I’m looking for suggestions and advice on what to do with my 85 xs650. I got it off a buddy of mine, he’s had it sitting for 2.5 years. It has Mikuni Carbs, aftermarket tank, and I recently installed new grips and throttle. It runs and drives but seems to backfire out of the left side exhaust after riding it for a while. I thought of hard tailing it, and doing forward controls but not sure on how much work it is. Let me know what y’all think I should do. I’m only a couple hundred buck into this bike at this point.