My grizz has been having an on going issue where it had the valves adjust before I purchased it along with the carb cleaned. Once I got it I fixed a few other issues before actually riding it. Once I could ride it the bike seems to have a cough or tremble thru the intake. It never dies just feels like a miss then continues just fine. Idles fine and has a ton of power when u hit it. I have changed out the plug. Which indicated normal wear. I cleaned carb myself. Now the choke cable pluger cap or piece that screws into carb is broke. But I do have part to fix. The pit cock and tank are clean and has an inline fuel filter which is clean as well. Bike is stock as stock can be. Anymore ideas guys… Please