Wondering if anyone can tell me the true difference between the RXO and the RAK version? Been fighting to get and old engine running and it is a '28. It came to me with an RXO since the truck is a '26, so I assumed it must have run that way at one time. I have had two RXO's on it and it has to have the choke constantly half closed to even think about running and will not idle period. I have eliminated , I believe, everything else so now I am back to carburetors again.
