Carb problems

[mooren]

So I just put an aftermarket slip on exhaust and took out the snorkel on my 2010 KLX 250s, Now I've got the dynojet 128 main and a 38 pilot jet in it .

Fired it up last night, and it ran perfect then all of the sudden starts to sputter and wont idle at all will run at higher rpms but really rough and rich, any suggestions ?

[William1]

Check the main jet

[mooren]

Also I'm not sure if the float level is set do you know what its supost to be set to ?

[mooren]

Just cleaned the carb out again and it did the same thing ran for a few seconds then stalled, it starts but you have to rev it and its all rough.

Maybe float level or do you think I have to rich of jets ?