the bike is cutting out at half to full throttle.the bike is piped and jetted,i switch carbs and the problem was still there.unhooked the reverse overide from the coil and that hasn't helped either.what sucks is it doesn't happen every time i ride it.the dealer says they can't tell me what's wrong if it's not broke. i also took fuel pump apart and it look good.

 

sounds to me like you need to rejet your carb. Check your plug and see what it looks like.

 

Is your air filter clean? Read your plug. Check the plug wire to ensure it's healthy.
How old is the fuel? Is your fuel valve on all the way? You changed carbs??? hmmmm
What is your plug gap? Test your coil.
When you changed carbs did you use the same jet size?
What are your mods? I used to have a Scrambler 500.