Can't complain about mine, it came to me beat to heck and after a good cleanup it ran great. After all a good bushing engine doesn't have much to break. I can remember only one of two bushing engines in the past few years (of many different brands) that I have seen with significant bearing wear. I have seen several ball bearing engines with crunchy bearings. Not to say they are superior but going by the averages I have seen bushing engines tend to be quite durable.