I have a slight problem. I think that I know what the problem is but have not idea how to fix it. The left side cylinder(opposite the kick start, the choke side) is not firing. The cylinder is getting spark, but seems like it does not get any fuel to actually make the cylinder fire. When a new plug is put in and ran it looks like new when pulled back out. But when I pull out the choke about a quarter of the way out the cylinder starts to fire like it should, but then when the choke is released the cylinder quits firing. If you guys have any ideas about what I could check/repair then it would be greatly appreciated!