As mentioned a bunch of times before, did ya pull the muffler and check/clean the cyl. port of any carbon buildup? Check the plug for correct gap, worn out?
Carb mounting tight?
" But let me tell you something ,folks: You can't fix stupid!
There's not a pill you can take, there's not a class you can go to. Stupid is forever!"
" Pay no attention to that man behind the curtain!