looking for some help. I just bought a couple of xr's 400 and 100. The 100 can't wait to start, you just look at the kick start and it fires. I am not having as much luck with the 400. I've always heard that they were easy to start but it takes as many as 15 kicks , sometimes. The bike is easy to kick , thats not the problem, it just seems like a carb setting or timing might be off. Anyone have a quick check list of things that might be a little off? I've got a 99 yz 400 that is way more consistant than the xr. Float level, air screw? The bike is three months old, clean filter, plug looks alright, bike runs fine after I run it for a few minutes. Anyone?