Let me preface my response with this, I never intend to persuade people to do things, but I try very hard to be accurate, and I do make mistakes sometimes. I also never intend to make people mad, and I do think that people should absolutely do their own research. I guess I assumed the risks of lead are self evident, stupid me.
Unfortunately, the internet is often very inaccurate. I have worked in the aviation industry for over twenty years along with doing tree work, so I have a small amount of experience with Avgas and its use/history. Leaded fuel, in the early years, both auto and aviation, allowed up to approximately 4 g/gal and was slowly reduced to about 2g/gal in the 80’s, then eliminated for “road use”. I would consider half the amount a significant reduction and that is what i was referring to. In addition, modern racing fuel can have as much as 6g/gal which is significantly higher than 2g/gal. On another note, there is also Avgas (G100UL) that has NO lead in it, but also very hard to obtain. I look forward to when it is readily available as I will switch to using it myself.
I agree, the risks are definitely something anyone who chooses to use leaded fuel should consider. As I stated, I think Avgas is the best option because I am able to keep a significant amount on hand and it has proven itself to have an exceptional shelf life along with good operational characteristics. Every saw I run hasn’t given me problems even after sitting with fuel in the saw for long periods. Some saws I may not run for months while others I run every week. I don’t want to worry about what saws i put away with the right fuel and which fuel tank has what type and all that stuff. Again, it’s just my viewpoint.