I recently had port work done to my bike. I always check my chain, sprockets, axle nut, etc., as well as everything else on my bike after and during every ride. The last time I went out riding hard, the chain was a little loose but I figured it was alright for one more ride before tightening it. I rode all day and was doing wheelies and riding it hard. Last night it snowed hard and took it for a light ride around the streets(without checking it). I did a doughnut and felt the chain skip. I looked at the front sprocket and noticed it's rounded off. It looked fine before the last time I rode it hard. My question is, could it get rounded like this from one ride with a more powerful engine and a loose chain? The only problem I've had with a stock engine, was breaking teeth off from a mis-aligned chain. These teeth look all uniform and rounded. The chain looks aligned. It's not a name brand sprocket either. It just seemed to happen rather quickly. SORRY for the long winded post but just wanted to explain it correctly. Also, any name brand sprockets that you would suggest. THANKS ALOT for any replies and taking the time to read this long ass post. :beer: