I mix it in a separate, 2-gallon gas container, as a non-foolish person should. I use between 3-4% due to conflicting info you mentioned so I should be good(as I haven't hit 100 miles, yet).
It probably is a fuel block of some kind. I just wanted to check with everyone because I left it over on South Bass Island. I'm going back there in two weeks but if I don't have the right parts when I get over there, it won't get fixed.
Oh well, another trip to Handybikes. I don't know what I would do if those guys weren't in town. Thanks for the input!