20 years ago when I was cutting / selling firewood for a living; I had an old cast aluminum Homelite chain saw. In the middle of a hot summer, way up in the mountains, and it continuously vapor locks on me. Well after the 'nth time that day, I'd done HAD IT ! Grabbed the bar with my gloved hands and bounced it off a log a half dozen times, grabbed up my 12g full of slugs and pumped 7 rounds in rapid succession into that POS ! That action FORCED me to go buy a brand new Johonsered (sp) Johnny Red and had zero probs other than running over it a coupla times. Still have it to this day.