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We can only go on what you've said so far, but if I understand you, you think the chain has a bend in it because you throw the chain easily. You may have a bent chain, but what is more likely is that your chain is stretching from overheating. First thing I would check is whether your oiler is working properly. Dry chain is hot chain. You say you have pinched the bar several times. It is more likely that your bar groove is pinched than your chain is bent. Take the chain off and carefully check the bar. With the bar off, try running the chain along the bar, top and bottom and feel for any binding. Also sight along the bar, or use a straight edge and make sure your bar is straight. The most common cause of excess chain stretch is running a dull chain. Do you sharpen your chain often? You should be doing so. Lastly, you may simply be running your chain too loose. Check any of the major chainsaw sites and you will find recommendations for adjusting your chain. I run mine fairly tight as recommended by Stihl, but others prefer a little looser, such as a dime's width of gap between the bottom of the bar and the part of the chain that rides on the bar. At any rate you shouldn't be setting your chain any looser than the latter. It's especially important to keep your chain properly tensioned when cutting brush because small twigs have a tendency to insert themselves between chain and bar with the result of throwing the chain. Mike
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