Honda Guy Here...
- I do let the motor run dry after every usage
- I had used Stabil but it didn't seem to make any difference
- I do think the problem is due to the engine design - it's at least a contributing factor
- I buy my aviation fuel at a small business and general aviation airport. I show up with my red gas can, the fuel truck is called, and I get my 3-gallons. I understand that they have many similar customers. Not sure about this, but I so not think they're supposed to sell it for non-aviation use ... I always feel like I'm breaking the law. "LL" stands for low lead - it contains some lead.