It has an intermitant deadspot in the throttle, I ordered a new pedal assembly but now im having second thoughts on that being the problem. At cruising speed engine loses enough power it feels like a fuel pump shut off, so I put a fp gauge in cab and thats not the problem. The power loss is more obvious when cruising in the extreme vs econo program. I havent pulled chip and driven it that way yet, should I try that? Any ideas on what to check? Ive got to get this figured out before I leave tomorrow, not to fond of being stranded on hwy somewhere in western KS or eastern CO