Cool old macs you have there. I can see the disease has a firm hold of you. My dealer was nice enough last time I visited to give me 4 chainsaws for free. The prize acquisition is a Mac double eagle 80 in great shape, I got it running in no time. The thing cuts well. I also landed a pro mac 5700 in good shape. A little messing with the carb and she is up and running. It sounds really good.