I just bought a used ms 200t looks to be in good shape. Saw starts runs for a while and then dies, carb just had a kit put in, new impulse line, spark seems good, plug looks to be new. Checked the intake boot looked fine no cracks. Removed fuel line seemed to be good, no cracks. Installed new filter with clean fuel. Tried to tune the saw but never seems to run clean, always wants to die as you start to throttle up. I called the pervious owner he said it had been running good? Not sure if that is the case. I tried spraying wd40 on the clutch side to see if the seals were bad, no luck? I am thinking it is the carb,I am about ready to sell the thing but will try a carb if it will solve the problem. Also tried removing the little piston deal to look at that as per a thread I read on here. The rod wouldn't come out so got a bigger hammer and it wrecked the end of the rod. Just curious what I could have done to prevent this? Thanks in advance