ok the bike runs... and when it is going it's fine. starting it is a nightmare though. i installed a spanking new champion l86c just like Larry said was factory spec'd, it's full of gas. i mixed 2.501 gallons of gas with a cup (8 oz) plus a tiny splash of oil... which is as precisely close to 40:1 as i can get. the only possible problem i can see is there's a bubble in the gas line. any ideas?